BEGIN:VCALENDAR METHOD:PUBLISH PRODID:www-math-fau-de//Events//DE VERSION:2.0 BEGIN:VEVENT SUMMARY:Colloquium: Gerd Antes (Albert-Ludwigs-Universität Freiburg): Von Studien über Big Data zu Künstlicher Intelligenz - Freund oder Feind? UID:f48045c2-f3c0-45d5-ad9f-cd06e1a2cc40 DESCRIPTION:For details of the lectures\, please see https://en.www.ma th.fau.de/department/mathematisches-kolloquium/colloquium-ss-2026/#pan el_a5042356 DTSTART:20260623T143000Z DTEND:20260623T153000Z LOCATION:Hörsaal H13\, Cauerstr. 11\, 91058 Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Colloquium: Cristina Palmer-Anghel (Université Clermont Auver gne): Unifying Quantum Invariants via Configuration Spaces UID:a7ef40d8-d228-4a93-966a-de06755faa2d DESCRIPTION:For details of the lectures\, please see https://en.www.ma th.fau.de/department/mathematisches-kolloquium/colloquium-ss-2026/#300 62026-c-palmer-anghel-universit-clermont-auvergne-unifying-quantum-inv ariants-via-configuration-spaces DTSTART:20260630T143000Z DTEND:20260630T153000Z LOCATION:Hörsaal H13\, Cauerstr. 11\, 91058 Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Colloquium: Jussi Behrndt (TU Graz): Spectral Theory for Diffe rential Operators with Singular Potentials UID:a7ef40d8-d228-4a93-966a-de06755faa2d DESCRIPTION:For details of the lectures\, please see https://en.www.ma th.fau.de/department/mathematisches-kolloquium/colloquium-ss-2026/#070 72026-j-behrndt-tu-graz-spectral-theory-for-differential-operators-wit h-singular-potentials DTSTART:20260707T143000Z DTEND:20260707T153000Z LOCATION:Hörsaal H13\, Cauerstr. 11\, 91058 Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Colloquium: Igor Burban (Universität Paderborn): Algebraic Ge ometry of the Classical Yang-Baxter Equation UID:901b1717-5b0f-4c96-9006-9d51970e3076 DESCRIPTION:For details of the lectures\, please see https://en.www.ma th.fau.de/department/mathematisches-kolloquium/colloquium-ws-2025-26/# collapse_10 DTSTART:20260203T153000Z DTEND:20260203T163000Z LOCATION:Hörsaal H13\, Cauerstr. 11\, 91058 Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Colloquium: Piotr Bogusław Mucha (Uniwersytet Warszawski): Co ncept of Weak and Regular Solutions in PDEs: The Example of the Navier -Stokes Equations UID:a7ef40d8-d228-4a93-966a-de06755faa2d DESCRIPTION:For details of the lectures\, please see https://en.www.ma th.fau.de/department/mathematisches-kolloquium/colloquium-ss-2026/#140 42026-p-b-mucha-uniwersytet-warszawski-concept-of-weak-and-regular-sol utions-in-pdes-the-example-of-the-navierstokes-equations DTSTART:20260414T143000Z DTEND:20260414T153000Z LOCATION:Hörsaal H13\, Cauerstr. 11\, 91058 Erlangen RRULE:FREQ=WEEKLY;UNTIL=20260707T143000Z EXDATE:20260428T143000Z DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Colloquium: David Reutter (Universität Hamburg): Fermions and the Algebraic Closure of the Category of Vector Spaces UID:a7ef40d8-d228-4a93-966a-de06755faa2d DESCRIPTION:For details of the lectures\, please see https://en.www.ma th.fau.de/department/mathematisches-kolloquium/colloquium-ss-2026/#210 42026-d-reutter-universitaet-hamburg-fermions-and-the-algebraic-closur e-of-the-category-of-vector-spaces DTSTART:20260421T143000Z DTEND:20260421T153000Z LOCATION:Hörsaal H13\, Cauerstr. 11\, 91058 Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Colloquium: Gabriel Wittum (King Abdullah University of Scienc e and Technology\, Kingdom of Saudi Arabia): Parallel Adaptive Simulat ion of Processes from Science and Engineering UID:f9635b96-75e0-4b29-a913-25968e5e9d22 DESCRIPTION:For details of the lectures\, please see https://en.www.ma th.fau.de/department/mathematisches-kolloquium/colloquium-ss-2026/#280 42026-g-wittum-kaust-kingdom-of-saudi-arabia-parallel-adaptive-simulat ion-of-processes-from-science-and-engineering DTSTART:20260428T143000Z DTEND:20260428T153000Z LOCATION:Hörsaal H13\, Cauerstr. 11\, 91058 Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Colloquium: Mathematisches Kolloquium zum Fokus Lehre: Chia Ki esel\, Lea Boßmann\, Hermann Schulz-Baldes\, Anke Lindmeier (FAU): Ü bungsaufgaben als Lerngelegenheit in der Studieneingangsphase - erste Erfahrungen mit Re:Math-Aufgaben (FAU Innovationspool) UID:8465d07e-77d0-491a-bbd0-7e6955c10bc0 DESCRIPTION:For details of the lectures\, please see https://en.www.ma th.fau.de/department/mathematisches-kolloquium/colloquium-ss-2026/#050 52026-mathematisches-kolloquium-zum-fokus-lehre-c-kiesel-l-bossmann-h- schulz-baldes-a-lindmeier-fau-uebungsaufgaben-als-lerngelegenheit-in-d er-studieneingangsphase-erste-erfahrungen-mit-remath-aufgaben-fau-inno vationspool DTSTART:20260505T143000Z DTEND:20260505T153000Z LOCATION:Hörsaal H13\, Cauerstr. 11\, 91058 Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Colloquium: Lehrerinnen- und Lehrerkolloquium: Daniel Grieser (Carl von Ossietzky Universität Oldenburg): Die Studieneingangsphase Mathematik - Herausforderungen und Ideen UID:b89b888a-ba24-4f1e-91d0-9753a6e198aa DESCRIPTION:For details of the lectures\, please see https://en.www.ma th.fau.de/department/mathematisches-kolloquium/colloquium-ss-2026/#190 52026-lehrerinnen-und-lehrerkolloquium-d-grieser-carl-von-ossietzky-un iversitaet-oldenburg-brdie-studieneingangsphase-mathematik-herausforde rungen-und-ideen DTSTART:20260519T143000Z DTEND:20260519T153000Z LOCATION:Hörsaal H13\, Cauerstr. 11\, 91058 Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Colloquium: Nicolas Neuß (FAU): Mathematische Modellierung am Beispiel von Covid-19 und darüber hinaus UID:a7ef40d8-d228-4a93-966a-de06755faa2d DESCRIPTION:For details of the lectures\, please see https://en.www.ma th.fau.de/department/mathematisches-kolloquium/colloquium-ss-2026/#pan el_1af698b4 DTSTART:20260609T143000Z DTEND:20260609T153000Z LOCATION:Hörsaal H13\, Cauerstr. 11\, 91058 Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Colloquium: Lorenz Schwachhöfer (TU Dortmund): Wasserstein Ge ometry\, the Otto Metric\, and Divergences UID:79be122c-e008-465c-9ff5-407bb81df1a9 DESCRIPTION:For details of the lectures\, please see https://en.www.ma th.fau.de/department/mathematisches-kolloquium/colloquium-ss-2026/#160 62026-l-schwachhoefer-tu-dortmund-wasserstein-geometry-the-otto-metric -and-divergences DTSTART:20260616T143000Z DTEND:20260616T153000Z LOCATION:Hörsaal H13\, Cauerstr. 11\, 91058 Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Colloquium: Jan Giesselmann (Technische Universität Darmstadt ): On the Connection Between Well-Posedness and a Posteriori Error Est imates\, Illustrated for Hyperbolic Conservation Laws UID:b3e4a467-21a0-42ec-85dd-1b84e7cce622 DESCRIPTION:For details of the lectures\, please see https://en.www.ma th.fau.de/department/mathematisches-kolloquium/colloquium-ws-2025-26/# collapse_2 DTSTART:20251028T153000Z DTEND:20251028T163000Z LOCATION:Hörsaal H13\, Cauerstr. 11\, 91058 Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Colloquium: Aidan Sims (University of New South Wales): There and back again: Coordinates for Operator Algebras UID:1c1d6d5d-84f0-4fb3-873d-7d7b9c985e63 DESCRIPTION:For details of the lectures\, please see https://en.www.ma th.fau.de/department/mathematisches-kolloquium/colloquium-ws-2025-26/# collapse_3 DTSTART:20251111T153000Z DTEND:20251111T163000Z LOCATION:Hörsaal H13\, Cauerstr. 11\, 91058 Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Colloquium: Frank den Hollander (Universiteit Leiden): Self-Re inforced Preferential Attachment UID:c2b63b73-25f5-47ea-b9a6-ff52f320b31f DESCRIPTION:For details of the lectures\, please see https://en.www.ma th.fau.de/department/mathematisches-kolloquium/colloquium-ws-2025-26/# collapse_4 DTSTART:20251125T153000Z DTEND:20251125T163000Z LOCATION:Hörsaal H13\, Cauerstr. 11\, 91058 Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Colloquium: Ulrike Meier-Robisch und Sylvia Stark (Staatl. Rea lschule Herzogenaurach): Wie halte ich Matheunterricht an der Schule u nd wie komme ich gut durch das Referendariat (im Realschullehramt)? UID:cdcbe2df-c6c2-4f50-901e-eeac702c6026 DESCRIPTION:For details of the lectures\, please see https://en.www.ma th.fau.de/department/mathematisches-kolloquium/colloquium-ws-2025-26/# collapse_5 DTSTART:20251202T123000Z DTEND:20251202T133000Z LOCATION:Besprechungsraum 01.382\, Cauerstr. 11\, 91058 Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Colloquium: LehrerInnenkolloquium und Weihnachtsvortrag: Stefa nie Rach (Otto-von-Guericke-Universität Magdeburg): Individuelle Bedi ngungsfaktoren und Studienerfolg in der Studieneingangsphase Mathemati k UID:47455787-f94e-4c73-b4e9-d03a9cfdcb3e DESCRIPTION:Im Anschluss: Weihnachtsfeier der Lehreinheit Mathematik u nd Data Science For details of the lectures\, please see https://en.ww w.math.fau.de/department/mathematisches-kolloquium/colloquium-ws-2025- 26/#collapse_6 DTSTART:20251209T153000Z DTEND:20251209T163000Z LOCATION:Hörsaal H13\, Cauerstr. 11\, 91058 Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Colloquium: Alain Joye (Université Grenoble Alpes): Quantum W alks\, Deterministic and Random UID:e991c72c-1669-4e92-8657-f9e388dc11cc DESCRIPTION:For details of the lectures\, please see https://en.www.ma th.fau.de/department/mathematisches-kolloquium/colloquium-ws-2025-26/# collapse_7 DTSTART:20260113T153000Z DTEND:20260113T163000Z LOCATION:Hörsaal H13\, Cauerstr. 11\, 91058 Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Colloquium: Habilitations-Vorstellungsvortrag Andrian Uihlein (FAU): Efficient Structural Optimization Under Uncertainty UID:0967a054-84fc-44b8-a49a-3aaad9c91631 DESCRIPTION:For details of the lectures\, please see https://en.www.ma th.fau.de/department/mathematisches-kolloquium/colloquium-ws-2025-26/# collapse_8 DTSTART:20260120T153000Z DTEND:20260120T163000Z LOCATION:Hörsaal H13\, Cauerstr. 11\, 91058 Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Colloquium: Andrea Bréard (FAU): The Art of 'Discrete Accumul ations' or: Combinatorics in 19th Century China UID:f8d13e80-2338-47a5-8298-511a5c0a0957 DESCRIPTION:For details of the lectures\, please see https://en.www.ma th.fau.de/department/mathematisches-kolloquium/colloquium-ws-2025-26/# collapse_9 DTSTART:20260127T153000Z DTEND:20260127T163000Z LOCATION:Hörsaal H13\, Cauerstr. 11\, 91058 Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Colloquium: Volker Schomerus (Universität Hamburg): Integrabl e Quantum Mechanics and the Theory of Groups UID:560330d5-0484-4182-8838-2d7ea9454e77 DESCRIPTION:For details of the lectures\, please see https://en.www.ma th.fau.de/department/mathematisches-kolloquium/colloquium-ss-2025/#col lapse_5 DTSTART:20250603T143000Z DTEND:20250603T153000Z LOCATION:Hörsaal H13\, Cauerstr. 11\, 91058 Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Colloquium: Magdalena Elena Musat (University of Copenhagen): The Connes-Kirchberg Problem and Infinite Dimensional Phenomena in Qua ntum Information Theory UID:15f7bc30-adce-4c40-a0ad-fe6e7076179e DESCRIPTION:For details of the lectures\, please see https://en.www.ma th.fau.de/department/mathematisches-kolloquium/colloquium-ss-2025/#col lapse_6 DTSTART:20250610T143000Z DTEND:20250610T153000Z LOCATION:Hörsaal H13\, Cauerstr. 11\, 91058 Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Colloquium: Willy Dörfler (Karlsruher Institut für Technolog ie): Numerical Methods for the Landau-Lifschitz-Gilbert Equations UID:3254a6c5-7533-4dfa-8ab7-4d27f2aef877 DESCRIPTION:For details of the lectures\, please see https://en.www.ma th.fau.de/department/mathematisches-kolloquium/colloquium-ss-2025/#col lapse_7 DTSTART:20250624T143000Z DTEND:20250624T153000Z LOCATION:Hörsaal H13\, Cauerstr. 11\, 91058 Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Colloquium: Ulrike Meier-Robisch und Sylvia Stark (Staatl. Rea lschule Herzogenaurach): Matheunterricht an Schulen und die Anforderun gen ans Referendariat im Realschullehramt - canceled UID:d53afb68-895d-4e53-b521-7c2a933f1696 DESCRIPTION:For details of the lectures\, please see https://en.www.ma th.fau.de/department/mathematisches-kolloquium/colloquium-ss-2025/#col lapse_8 DTSTART:20250715T113000Z DTEND:20250715T123000Z LOCATION:Besprechungsraum 01.382\, Cauerstr. 11\, 91058 Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Colloquium: Lehrerinnen- und Lehrerkolloquium: Albrecht Kliem (Wirsberg-Gymnasium Würzburg): Gehaltvolle Mathematikaufgaben in der Schule UID:aa94d2d6-893a-4db3-8189-3fcc7937cee3 DESCRIPTION:For details of the lectures\, please see https://en.www.ma th.fau.de/department/mathematisches-kolloquium/colloquium-ss-2025/#col lapse_9 DTSTART:20250715T143000Z DTEND:20250715T153000Z LOCATION:Hörsaal H13\, Cauerstr. 11\, 91058 Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Colloquium: Peter Bastian (Universität Heidelberg): Coupled S hallow Surface and Subsurface flow with Application to high Mountain C atchments UID:b23ac53e-7943-4201-ae6c-e9f705444868 DESCRIPTION:For details of the lectures\, please see https://en.www.ma th.fau.de/department/mathematisches-kolloquium/colloquium-ss-2025/#col lapse_10 DTSTART:20250722T143000Z DTEND:20250722T153000Z LOCATION:Hörsaal H13\, Cauerstr. 11\, 91058 Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Colloquium: Giambattista Giacomin (Università degli Studi di Padova): Products of Random Matrices and the Statistical Mechanics of Disordered Spin Systems UID:5294e7c3-832b-4025-97b2-8863f9276a40 DESCRIPTION:For details of the lectures\, please see https://en.www.ma th.fau.de/department/mathematisches-kolloquium/colloquium-ws-2025-26/# collapse_0 DTSTART:20251014T143000Z DTEND:20251014T153000Z LOCATION:Hörsaal H13\, Cauerstr. 11\, 91058 Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Colloquium: Paul Wedrich (Universität Hamburg): From Link Hom ology to Topological Quantum Field Theories - candelled UID:bbfc618d-cc56-4fb6-8db5-d581b41a2090 DESCRIPTION:For details of the lectures\, please see https://en.www.ma th.fau.de/department/mathematisches-kolloquium/colloquium-ws-2025-26/# collapse_1 DTSTART:20251021T143000Z DTEND:20251021T153000Z LOCATION:Hörsaal H13\, Cauerstr. 11\, 91058 Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Colloquium: Alexander Strohmaier (Leibniz Universität Hannove r): Relative Traces in Scattering Theory and the Casimir Effect UID:8367a019-90c6-4b4f-bf48-b9084187b276 DESCRIPTION:For details of the lectures\, please see https://en.www.ma th.fau.de/department/mathematisches-kolloquium/colloquium-ws-2024-2025 /#collapse_10 DTSTART:20250128T153000Z DTEND:20250128T163000Z LOCATION:Hörsaal H13\, Cauerstr. 11\, 91058 Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Colloquium: Damian Longin Osajda (University of Copenhagen): F ixed Points: From Local to Global UID:a2716e55-0d7a-40f6-a3a9-740c34ca067b DESCRIPTION:For details of the lectures\, please see https://en.www.ma th.fau.de/department/mathematisches-kolloquium/colloquium-ws-2024-2025 /#collapse_11 DTSTART:20250204T153000Z DTEND:20250204T163000Z LOCATION:Hörsaal H13\, Cauerstr. 11\, 91058 Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Colloquium: Habilitations-Vorstellungsvortrag Ricardo Correa d a Silva (FAU): Real Subspaces and Local Structures in Algebraic Quantu m Field Theory UID:0f09ae48-b640-4371-a34f-bd40dd39676d DESCRIPTION:For details of the lectures\, please see https://en.www.ma th.fau.de/department/mathematisches-kolloquium/colloquium-ss-2025/#col lapse_0 DTSTART:20250429T143000Z DTEND:20250429T153000Z LOCATION:Hörsaal H13\, Cauerstr. 11\, 91058 Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Colloquium: Joachim Cuntz (Universität Münster): Topological Invariants for Algebras of Operators on Hilbert Space UID:76d70a7d-ad4f-44ec-829c-bd2f77e4ce13 DESCRIPTION:For details of the lectures\, please see https://en.www.ma th.fau.de/department/mathematisches-kolloquium/colloquium-ss-2025/#col lapse_1 DTSTART:20250506T143000Z DTEND:20250506T153000Z LOCATION:Hörsaal H13\, Cauerstr. 11\, 91058 Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Colloquium: Tomoyuki Arakawa (Kyoto University): Symplectic Si ngularities and Vertex Algebras UID:984dfc6e-409f-4d8a-a641-c5a18efafaa5 DESCRIPTION:For details of the lectures\, please see https://en.www.ma th.fau.de/department/mathematisches-kolloquium/colloquium-ss-2025/#col lapse_2 DTSTART:20250513T143000Z DTEND:20250513T153000Z LOCATION:Hörsaal H13\, Cauerstr. 11\, 91058 Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Colloquium: Martin Wendler (Otto-von-Guericke-Universität Mag deburg): Change-Point Detection for Functional Time Series Without Dim ension Reduction UID:84f221be-91e1-4781-b0a8-4ff74e9915ef DESCRIPTION:For details of the lectures\, please see https://en.www.ma th.fau.de/department/mathematisches-kolloquium/colloquium-ss-2025/#col lapse_3 DTSTART:20250520T143000Z DTEND:20250520T153000Z LOCATION:Hörsaal H13\, Cauerstr. 11\, 91058 Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Colloquium: Sergiy Neshveyev (University of Oslo): The Mackey Machine and the Ideal Structure of Crossed Product Type Algebras UID:b83c6afb-71f1-41aa-b21b-62b42e3b54f6 DESCRIPTION:For details of the lectures\, please see https://en.www.ma th.fau.de/department/mathematisches-kolloquium/colloquium-ss-2025/#col lapse_4 DTSTART:20250527T143000Z DTEND:20250527T153000Z LOCATION:Hörsaal H13\, Cauerstr. 11\, 91058 Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Colloquium: Bernd Sturmfels (MPI-MiS Leipzig): The Two Lives o f the Grassmannian UID:79c68aae-f2be-4247-ab50-2001403deae5 DESCRIPTION:For details of the lectures\, please see https://en.www.ma th.fau.de/department/mathematisches-kolloquium/colloquium-ws-2024-2025 /#collapse_2 DTSTART:20241105T153000Z DTEND:20241105T163000Z LOCATION:Hörsaal H13\, Cauerstr. 11\, 91058 Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Colloquium: Marie-Christine Düker (FAU): Antrittsvorlesung: H igh-Dimensional Latent Gaussian Count Time Series UID:3e95ffd9-a886-442d-ae12-c6173de64a65 DESCRIPTION:For details of the lectures\, please see https://en.www.ma th.fau.de/department/mathematisches-kolloquium/colloquium-ws-2024-2025 /#collapse_3 DTSTART:20241112T153000Z DTEND:20241112T163000Z LOCATION:Hörsaal H13\, Cauerstr. 11\, 91058 Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Colloquium: Norbert Schappacher (Université de Strasbourg): R ational Quadrilaterals\, Oscillators\, and a Momentous Contribution to Number Theory. The Headstrong Life and Work of Kurt Heegner (1893-196 5) UID:dc711e96-9b5e-40a2-87d7-c73b7e44b098 DESCRIPTION:For details of the lectures\, please see https://en.www.ma th.fau.de/department/mathematisches-kolloquium/colloquium-ws-2024-2025 /#collapse_4 DTSTART:20241119T153000Z DTEND:20241119T163000Z LOCATION:Hörsaal H13\, Cauerstr. 11\, 91058 Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Colloquium: Frank den Hollander (Universiteit Leiden): The Fri endship Paradox in Social Networks UID:65cf9396-00f9-4476-b1ce-724d3343cf05 DESCRIPTION:For details of the lectures\, please see https://en.www.ma th.fau.de/department/mathematisches-kolloquium/colloquium-ws-2024-2025 /#collapse_5 DTSTART:20241126T153000Z DTEND:20241126T163000Z LOCATION:Hörsaal H13\, Cauerstr. 11\, 91058 Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Colloquium: Christian Bär (Universität Potsdam): Counterintu itive Approximations UID:629cfb42-856b-43ab-91b7-a2f5d6e98e44 DESCRIPTION:For details of the lectures\, please see https://en.www.ma th.fau.de/department/mathematisches-kolloquium/colloquium-ws-2024-2025 /#collapse_6 DTSTART:20241203T153000Z DTEND:20241203T163000Z LOCATION:Hörsaal H13\, Cauerstr. 11\, 91058 Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:LehrerInnenkolloquium und Weihnachtsvortrag: Caroline Merkel ( Leiterin des Amts für Allgemeinbildende Schulen in Nürnberg): Mathes tärken stärken - Entwicklung der Potenziale von Lernenden anregen un d Kinder und Jugendliche bestmöglich begleiten UID:e68c90ca-8b83-4ff3-8c93-4894f94be835 DESCRIPTION:For details of the lectures\, please see https://en.www.ma th.fau.de/department/mathematisches-kolloquium/colloquium-ws-2024-2025 /#collapse_7 DTSTART:20241217T153000Z DTEND:20241217T163000Z LOCATION:Hörsaal H13\, Cauerstr. 11\, 91058 Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Colloquium: W. D. van Suijlekom (Radboud Universiteit): A Gene ralization of K-Theory to Operator Systems UID:2b3d6321-5953-43e4-88b4-7269118bb98f DESCRIPTION:For details of the lectures\, please see https://en.www.ma th.fau.de/department/mathematisches-kolloquium/colloquium-ws-2024-2025 /#collapse_8 DTSTART:20250107T153000Z DTEND:20250107T163000Z LOCATION:Hörsaal H13\, Cauerstr. 11\, 91058 Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Colloquium: Stefan Teufel (Universität Tübingen):Linear Prob lems in Huge Dimensions: Mathematical Challenges in the Analysis of Ma ny-Body Quantum Theory UID:a481c563-cf1c-446d-b42d-cc63d259ef67 DESCRIPTION:For details of the lectures\, please see https://en.www.ma th.fau.de/department/mathematisches-kolloquium/colloquium-ws-2024-2025 /#collapse_9 DTSTART:20250121T153000Z DTEND:20250121T163000Z LOCATION:Hörsaal H13\, Cauerstr. 11\, 91058 Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Kolloquium: Florian Dorsch (Allianz SE München): Mathematiker im Beruf: Junior Aktuar UID:d35b24de-4572-4e78-9c07-1019cbea1e14 DESCRIPTION:Mathematiker im Beruf: Junior Aktuar –\; Vortragender : Florian Dorsch\, Allianz SE München –\; Einladender: H. Schulz -Baldes Abstract: Ein Junior Aktuar und ehemaliger\, promovierter Mita rbeiter des Departments Mathematik der FAU berichtet von seinen Erfahr ungen an seinem Arbeitsplatz im Versicherungswesen und der berufsbegle itenden Ausbildung zum Aktuar (DAV). DTSTART:20240528T143000Z DTEND:20240528T153000Z LOCATION:Hörsaal H13\, Cauerstr. 11\, 91058 Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Kolloquium: Siegfried Echterhoff (Universität Münster): Amen able Group Actions on Spaces and Operator Algebras UID:11437ea1-1709-4f1c-90b6-8ddbbff310de DESCRIPTION:Amenable Group Actions on Spaces and Operator Algebras  211\; Vortragender: Siegfried Echterhoff\, Universität Münster ̵ 1\; Einladender: K. Li Abstract: Motivated by the study of paradoxical decompositions (as in the Banach-Tarski paradoxon)\, the notion of an amenable group has been introduced by von Neumann in the 1920’\; s. In the 1980’\;s Zimmer introduced the concept of amenable grou p actions on measure spaces in order to study rigidity properties of l attices in Lie groups. In the meantime\, various notions of amenabilit y were introduced for actions on topological spaces and on operator al gebras\, where the latter can be viewed as non-commutative analogues o f measure or topological spaces. They have important applications in t he interplay between group theory and operator algebras. After a gentl e introduction to various notions of amenable actions we want to give an overview over some exciting recent results. DTSTART:20240604T143000Z DTEND:20240604T153000Z LOCATION:Hörsaal H13\, Cauerstr. 11\, 91058 Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Kolloquium: Ulrike Meier-Robisch und Sylvia Stark (Staatl. Rea lschule Herzogenaurach): Anforderungen im Referendariat und das Fach v or Ort: Mathematik an Realschulen UID:ec46539b-c528-4a42-a2ab-e7e79ad3c545 DESCRIPTION:Anforderungen im Referendariat und das Fach vor Ort: Mathe matik an Realschulen –\; Vortragende: Ulrike Meier-Robisch und Sy lvia Stark (Seminarlehrerinnen)\, Staatliche Realschule Herzogenaurach –\; Einladende: M. Linsner und J. Schindler Abstract: Diese Vera nstaltung richtet sich an alle\, die einen Einblick in den Schulalltag einer Mathematiklehrkraft gewinnen möchten. Insbesondere sind Studie rende im Realschullehramt Mathematik eingeladen\, die ihr 1. Staatsexa men im Blick haben und neugierig sind\, was sie im Referendariat erwar tet. Zwei Seminarlehrerinnen berichten über den Vorbereitungsdienst u nd die sich daran anschließende Tätigkeit als Mathematiklehrkraft. E s wird u.a. darauf eingegangen\, wie das Referendariat zeitlich aufgeb aut ist und welche Ausbildungs- und Prüfungsbestandteile enthalten si nd. Weiterhin wird erklärt\, wieviel Stunden zu unterrichten sind und welcher Arbeitsaufwand zu erwarten ist. Interessant ist sicherlich au ch zu erfahren\, wie sehr sich der Mathematikunterricht an der Realsch ule von dem an der Universität erworbenen mathematischen Fachwissen u nterscheidet und wie eine Abschlussprüfung für Realschülerinnen und Schüler aussieht. Dem Vortrag schließt sich die Möglichkeit zu Fra gen und Diskussion unter allen Teilnehmenden an. Studierende und alle anderen Interessenten können im Vorfeld Fragen einreichen. Mailen Sie dazu an: ssc@math.fau.de Studierende\, die teilnehmen möchten\, kön nen sich bis zum 09.06.24 anmelden: StudOn-Kurs https://www.studon.fau .de/crs5706975.html Kolloquium | Anforderungen im Referendariat und da s Fach vor Ort: Mathematik an Realschulen | 11.06.24 DTSTART:20240611T143000Z DTEND:20240611T153000Z LOCATION:Hörsaal H13\, Cauerstr. 11\, 91058 Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Kolloquium: Sylvie Paycha (Universität Potsdam): Variations o n Locality UID:03aafa9f-d6c2-4e4b-84e6-2fc5a9082889 DESCRIPTION:Variations on Locality –\; Vortragende: Sylvie Paycha \, Universität Potsdam –\; Einladender: K.-H. Neeb Abstract: The principle of locality in quantum field theory states that an object i s influenced directly only by its immediate surroundings. We introduce locality relations\, defined as symmetric binary relations\, which ca pture essential features of locality. Correspondingly we define locali ty morphisms\, namely maps that factorise on products of pairs in the graph of such locality relations. This factorisation is a key property in the context of renormalisation\, which served as a motivation for us to introduce the notation of locality in the first place. I will sh ow its efficiency when counting lattice points inside a cone. This a p riori infinite cardinal can naturally be renormalised by implementing a regularisation in several variables. There locality plays an essenti al role in avoiding fake finite contributions. It enables a minimal su btraction scheme in several variables which singles out a relevant fin ite part from the a priori infinite cardinal. This is based on joint w ork with Li Guo (Rutgers\, Newark) and Bin Zhang (Sichuan U.\, Chengdu ). DTSTART:20240618T143000Z DTEND:20240618T153000Z LOCATION:Hörsaal H13\, Cauerstr. 11\, 91058 Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Kolloquium: Joachim Hilgert (Universität Paderborn): Lehrerin nen- und Lehrerkolloquium Euklidische Geometrie an Schule und Hochschu le UID:40c6b8e7-e66a-472c-8813-6764b0ff21f5 DESCRIPTION:Lehrerinnen- und Lehrerkolloquium: Euklidische Geometrie a n Schule und Hochschule –\; Vortragender: Joachim Hilgert\, Unive rsität Paderborn –\; Einladender: A. Knauf Abstract: Angesichts der rasanten Entwicklung von KI-Anwendungen wird die Überprüfung von Aussagen immer bedeutsamer. Fehlt dazu die Fähigkeit\, wird der Comp uter zum nicht hinterfragbaren Orakel und der Nutzer zum unmündigen A nwender. Vor diesem Hintergrund haben Grundkompetenzen in logischem Sc hließen eine ganz neue Relevanz. Die Euklidische Geometrie eignet sic h in wunderbarer Weise zur Einübung solcher Kompetenzen\, da sie mit einfachen und intuitiven Voraussetzungen arbeitet und und mithilfe kla rer Regeln zu unerwarteten Schlussfolgerungen gelangt. Sie ist nicht u msonst traditionell das erste Thema\, anhand dessen in der Schule das Konzept eines mathematischen Beweises vermittelt wird. Ein Problem der Geometrieausbildung im Lehramtstudium Mathematik ist die Lücke zwisc hen den Methoden des Schulunterrichts der Mittelstufe und den zentrale n Studieninhalten der mathematischen Grundvorlesungen. Weder die Verwe ndung von modernisierten Versionen von Euklids Axiomen (etwa diejenige n von Hilbert) noch das im Grundstudium vermittelte Rechnen in Koordin aten lässt sich auf den Unterricht in der Sekundarstufe 1 übertragen . In diesem Vortrag stelle ich einen axiomatischen Zugang zur Euklidis chen Geometrie vor\, der auf den Konzepten der mathematischen Grundvor lesungen wie den reellen Zahlen und metrischen Räumen basiert\, aber Beweisführungen im Stile der Schulgeometrie erlaubt. Damit werden zum Beispiel die Sätze der Dreiecksgeometrie für die Lehrkräfte rigoro s beweisbar und dennoch effektiv didaktisch reduzierbar. DTSTART:20240625T143000Z DTEND:20240625T153000Z LOCATION:Hörsaal H13\, Cauerstr. 11\, 91058 Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Kolloquium: Cornelia Schneider (FAU): A Multivariate Riesz Bas is of ReLU Neural Networks UID:5757b39b-65a4-4737-8054-d64c56ec23a5 DESCRIPTION:A Multivariate Riesz Basis of ReLU Neural Networks –\ ; Vortragende: Cornelia Schneider\, FAU Erlangen-Nürnberg –\; Ei nladender: K.-H. Neeb Abstract: We consider the trigonometric-like sys tem of piecewise linear functions introduced recently by Daubechies\, DeVore\, Foucart\, Hanin\, and Petrova. We provide an alternative proo f that this system forms a Riesz basis of $L_2([0\,1])$ based on the G ershgorin theorem. We also generalize this system to higher dimensions $d>1$ by a construction\, which avoids using (tensor) products. As a consequence\, the functions from the new Riesz basis of $L_2([0\,1]^d) $ can be easily represented by neural networks. Moreover\, the Riesz c onstants of this system are independent of $d$\, making it an attracti ve building block regarding future multivariate analysis of neural net works. DTSTART:20240709T143000Z DTEND:20240709T153000Z LOCATION:Hörsaal H13\, Cauerstr. 11\, 91058 Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Colloquium: Christian Wieners (KIT Karlsruhe): Efficient and R obust Coupling Methods for Electro-Mechanic Models of the Human Heart UID:096a2c03-f865-4d73-9080-d94ccc1b32f2 DESCRIPTION:For details of the lectures\, please see https://en.www.ma th.fau.de/department/mathematisches-kolloquium/colloquium-ws-2024-2025 /#collapse_0 DTSTART:20241015T143000Z DTEND:20241015T153000Z LOCATION:Hörsaal H13\, Cauerstr. 11\, 91058 Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Colloquium: Ulrike Meier-Robisch und Sylvia Stark (Staatl. Rea lschule Herzogenaurach): Matheunterricht an Realschulen (Studium vs. B erufsalltag) und die Anforderungen ans Referendariat UID:db041a59-ac12-4527-8b52-05e4e69ee3fb DESCRIPTION:For details of the lectures\, please see https://en.www.ma th.fau.de/department/mathematisches-kolloquium/colloquium-ws-2024-2025 /#collapse_1 DTSTART:20241105T123000Z DTEND:20241105T133000Z LOCATION:Besprechungsraum 01.382\, Cauerstr. 11\, 91058 Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Kolloquium: Florian Dorsch (Allianz SE München): Mathematiker im Beruf: Junior Aktuar - abgesagt wegen Krankheit UID:2f0df976-fc71-4a63-b9ca-0125080e7c22 DESCRIPTION:Mathematiker im Beruf: Junior Aktuar –\; Vortragender : Florian Dorsch\, Allianz SE München –\; Einladender: H. Schulz -Baldes Abstract: Ein Junior Aktuar und ehemaliger\, promovierter Mita rbeiter des Departments Mathematik der FAU berichtet von seinen Erfahr ungen an seinem Arbeitsplatz im Versicherungswesen und der berufsbegle itenden Ausbildung zum Aktuar (DAV). Abgesagt wegen Krankheit DTSTART:20240123T153000Z DTEND:20240123T163000Z LOCATION:Hörsaal H13\, Cauerstr. 11\, 91058 Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Kolloquium: Siegfried Echterhoff (Universität Münster): Amen able Group Actions on Spaces and Operator Algebras - in das SS 2024 ve rschoben UID:5db2b4f5-ec4a-472d-82a1-d5fe51996025 DESCRIPTION:Amenable Group Actions on Spaces and Operator Algebras  211\; Vortragender: Siegfried Echterhoff\, Universität Münster ̵ 1\; Einladender: K. Li Abstract: Motivated by the study of paradoxical decompositions (as in the Banach-Tarski paradoxon)\, the notion of an amenable group has been introduced by von Neumann in the 1920’\; s. In the 1980’\;s Zimmer introduced the concept of amenable grou p actions on measure spaces in order to study rigidity properties of l attices in Lie groups. In the meantime\, various notions of amenabilit y were introduced for actions on topological spaces and on operator al gebras\, where the latter can be viewed as non-commutative analogues o f measure or topological spaces. They have important applications in t he interplay between group theory and operator algebras. After a gentl e introduction to various notions of amenable actions we want to give an overview over some exciting recent results. DTSTART:20240130T153000Z DTEND:20240130T163000Z LOCATION:Hörsaal H13\, Cauerstr. 11\, 91058 Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Kolloquium: Gernot Akemann (Universität Bielefeld): Universal Random Matrix Statistics in low Dimensional Quantum Systems UID:dd935880-070c-4bbc-92d7-5cb883ec5831 DESCRIPTION:Universal Random Matrix Statistics in low Dimensional Quan tum Systems –\; Vortragender: Gernot Akemann\, Universität Biele feld –\; Einladender: T. Krüger Abstract: Random matrices are us ed to predict spectral statistics in many areas of physics. Often thes e predictions are based on heuristics\, sometimes a precise link can b e established. I will focus on random matrices with complex eigenvalue s and give an example for a precise map to ground state properties of a particular quantum system\, non-interacting fermions in a two-dimens ional rotating trap. On the mathematical side we find a remarkable rob ustness of the random matrix predictions for the mean\, variance and h igher order cumulants of the number of eigenvalues in a centered disc. Their independence from the distribution of matrix elements and symme try class of the chosen ensemble is called universality. This is based on joint work with Sungsoo Byun\, Markus Ebke and Gregory Schehr. DTSTART:20240206T153000Z DTEND:20240206T163000Z LOCATION:Hörsaal H13\, Cauerstr. 11\, 91058 Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Kolloquium: Marius Yamakou (FAU): Habilitations-Vorstellungsvo rtrag: Weak Stochastic Perturbations of a Multiple Timescale Dynamical System: Insights into Self-Induced Stochastic Resonance UID:73be1984-73de-47ce-a115-8c0995a30739 DESCRIPTION:Habilitations-Vorstellungsvortrag: Weak Stochastic Perturb ations of a Multiple Timescale Dynamical System: Insights into Self-In duced Stochastic Resonance –\; Vortragender: Marius Yamakou\, FAU Erlangen-Nürnberg –\; Einladender: K.-H. Neeb Abstract: How do biological neurons use stochastic noise to encode information determin istically? This talk considers a stochastic multiple-timescale dynamic al system with a strong timescale separation modeling a biological neu ron in the excitable state\, i.e.\, where the zero-noise dynamics do n ot display a limit cycle nor even its precursor. Within the frameworks of Geometric Singular Perturbation Theory and Large Deviation Theory\ , I will establish\, with high precision\, the asymptotic matching con ditions and locations under which and where a stochastic phase traject ory almost surely escapes from the normally hyperbolic parts of the cr itical manifold periodically\, thereby inducing a limit cycle solution that is absent without noise. The analysis unveils a nuanced mechanis m in neuroscience known as self-induced stochastic resonance\, where s tochastic noise is pivotal in optimizing the periodic processing of in formation within the neuron\, revealing an intricate interplay between determinism and stochasticity. DTSTART:20240416T143000Z DTEND:20240416T153000Z LOCATION:Hörsaal H13\, Cauerstr. 11\, 91058 Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Kolloquium: Stefan Waldmann (Julius-Maximilians-Universität W ürzburg): Deformation Quantization: Of old and new UID:c2f5440d-6d3a-43b9-82c5-567df4f474a1 DESCRIPTION:Deformation Quantization: Of old and new –\; Vortrage nder: Stefan Waldmann\, Julius-Maximilians-Universität Würzburg R 11\; Einladender: G. Lechner Abstract: In this talk I will give first an overview on the basic concepts and results from deformation quantiz ation including a fairly detailed motivation. The transition of star p roducts based on formal power series to such with honestly convergent series gained quite some interest in the recent decade. I will report on the main ideas and competing approaches to strict deformation quant ization\, including a discussion of some recent progress. DTSTART:20240423T143000Z DTEND:20240423T153000Z LOCATION:Hörsaal H13\, Cauerstr. 11\, 91058 Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Kolloquium: Wolfgang Arendt (Universität Ulm): The Dirichlet Problem Without the Maximum Principle UID:30b92cd2-6381-483b-9a2f-e57b102d51b0 DESCRIPTION:The Dirichlet Problem Without the Maximum Principle – \; Vortragender: Wolfgang Arendt\, Universität Ulm –\; Einladend er: E. Wiedemann Abstract: In the first part of the talk we recall kno wn results on the Dirichlet problem for the Laplacian. We will mention the Dirichlet Principle\, the Perron solution\, Wiener’\;s chara cterization of well-posedness via a capacity condition and several fur ther beautiful results. The fundamental De Giorgi-Nash Theorem allowed Stampacchia and coauthors to extend many of these results to elliptic operators (instead of the Laplacian). For these generalizations the m aximum principle plays an important role\; it is valid only if the coe fficients of the operator satisfy a certain divergence condition. In 2 019 we succeeded to prove many of the well-posedness results without t hat the maximum principle holds. The only condition we need is that 0 is not a Dirichlet eigenvalue\, which is equivalent to uniqueness in t he Dirichlet problem. The Perron solution is a special challenge in th is general setting\, and diverse equivalent descriptions could be give n recently. The most interesting one is even new for the Laplacian. Th ese results are contained in the following two articles: W. Arendt\, T . ter Elst: The Dirichlet Problem without the Maximum Principle. Ann. Inst. Fourier\, Grenoble\, 69 (2019) 763-782. W. Arendt\, T. ter Elst\ , M. Sauter: The Perron Solution for Elliptic Equations without the Ma ximum Principle. Math. Ann. 2024. DTSTART:20240430T143000Z DTEND:20240430T153000Z LOCATION:Hörsaal H13\, Cauerstr. 11\, 91058 Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Kolloquium: Marcus Waurick (TU Freiberg): Index Theorems for t he Dirac Operator UID:a9e58e7a-d9ab-4987-8a65-a67d52ef5338 DESCRIPTION:Index Theorems for the Dirac Operator –\; Vortragende r: Marcus Waurick\, Technische Universität Bergakademie Freiberg R 11\; Einladender: H. Schulz-Baldes Abstract: In mathematical physics i t is a challenging problem to compute the Fredholm index of a given pa rtial differential operator. For this\, generally\, only abstract resu lts are available with only little chance of providing an explicit for mula for the index. In certain situations\, however\, such computation s are possible. In this talk we showcase these situations for some Dir ac type operators and demonstrate their fundamental differences if con sidered on bounded underlying domains or on open space. Indeed\, in th e former case the obtained index formula depends only on the geometry of the underlying bounded domain\, whereas in the latter case the pres ented formula —\; also known as Callias Index Formula —\; so lely depends on the bounded\, selfadjoint matrix-valued asymptotically unitary potential. We demonstrate how to derive the formulas in eithe r case and give hints as to how the Witten index formula for the resol vents can be applied in the latter case. The talk is based on joint wo rk with Dirk Pauly (MZ\, 301:1739-1819\, 2022) and Fritz Gesztesy (LNM \, Springer\, 2157\, 2016). DTSTART:20240514T143000Z DTEND:20240514T153000Z LOCATION:Hörsaal H13\, Cauerstr. 11\, 91058 Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Kolloquium: David Kerr (Universität Münster): Suspending the Pigeonhole Principle: Amenability and the Rokhlin Lemma UID:8e078837-5aff-4ce6-869e-f1b0781b6eae DESCRIPTION:Suspending the Pigeonhole Principle: Amenability and the R okhlin Lemma –\; Vortragender: David Kerr\, Universität Münster –\; Einladender: K. Li Abstract: The Rokhlin lemma is a finite a pproximation property that underpins a great many constructions in cla ssical ergodic theory\, including most spectacularly those at the basi s of the Ornstein isomorphism theory for Bernoulli shifts. In the 1970 s Ornstein and Weiss showed amenability to be the natural setting for finite approximation in dynamics by establishing a general form of the Rokhlin lemma in this setting\, and this led\, among other things\, t o a much broader recasting of the Ornstein isomorphism theory. Over th e last couple of decades a growing interest in the interplay between d ynamics and the geometric and analytic structure of groups has set the stage for a resurgence of applications of the Ornstein-Weiss Rokhlin lemma\, once again confirming its utility as a powerful and versatile tool. I will sketch some of these recent applications\, ranging in fla vour from orbit equivalence to operator algebras. DTSTART:20231121T153000Z DTEND:20231121T163000Z LOCATION:Hörsaal H13\, Cauerstr. 11\, 91058 Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Kolloquium: Annika Betken (University of Twente Enschede): Tes ting for Independence Between Long-Range Dependent Time Series Based o n Distance Correlation UID:a15b2388-a04e-4ed9-8afe-03b3ff8f28c1 DESCRIPTION:Testing for Independence Between Long-Range Dependent Time Series Based on Distance Correlation –\; Vortragende: Annika Bet ken\, University of Twente Enschede –\; Einladende: M.-C. Düker Abstract: To test for independence of two time series we propose a lin ear combination of empirical distance cross-covariances as test statis tic. Its asymptotic distribution is derived under the hypothesis of in dependence\, while consistency is shown to hold for a large class of a lternatives. We observe that\, depending on the dependence in the data \, standardization and limit distributions of the proposed test statis tic vary. Since the limit distributions are unknown\, we establish a s ubsampling procedure to determine the critical values for the proposed test. DTSTART:20231128T153000Z DTEND:20231128T163000Z LOCATION:Hörsaal H13\, Cauerstr. 11\, 91058 Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Kolloquium: Michael Herty (RWTH Aachen): Uncertainty Quantific ation for Nonlinear Hyperbolic Differential Equations UID:19c63207-7f3f-4a6b-8dc2-54ad6b49790d DESCRIPTION:Uncertainty Quantification for Nonlinear Hyperbolic Differ ential Equations –\; Vortragender: Michael Herty\, Rheinisch-West fälische Technische Hochschule Aachen –\; Einladender: M. Gugat Abstract: We are interested in quantifying uncertainties that appear i n nonlinear hyperbolic partial differential equations arising in a var iety of applications from fluid flow to traffic modeling. A common app roach to treat the stochastic components of the solution is by using g eneralized polynomial chaos expansions. This method was successfully a pplied in particular for general elliptic and parabolic PDEsas well as linear hyperbolic stochastic equations. More recently\, gPC methods h ave been successfully applied to particular hyperbolic PDEs using the explicit form of nonlinearity or the particularity of the studied syst em structure as\, e.g.\, in the p-system. While such models arise in m any applications\, e.g.\, in atmospheric flows\, fluid flows under unc ertain gas compositions and shallow water flows\, a general gPC theory with corresponding numerical methods are still at large. Typical anal ytical and numerical challenges that appear for the gPC expanded syste ms are loss of hyperbolicity and positivity of solutions (like gas den sity or water depth). Any of those effects might trigger severe instab ilities within classical finite-volume or discontinuous Galerkin metho ds. We will discuss properties and conditions to guarantee stability a nd present numerical results on selected examples. DTSTART:20231205T153000Z DTEND:20231205T163000Z LOCATION:Hörsaal H13\, Cauerstr. 11\, 91058 Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Kolloquium: Norbert Henze (KIT): Weighted L²-distances for St atistical Model Checks in Euclidean and Hilbert Spaces UID:62e4d81b-1c2d-4ce1-955c-0e3ec9cd28c4 DESCRIPTION:Weighted L²-distances for Statistical Model Checks in Euc lidean and Hilbert Spaces –\; Vortragender: Norbert Henze\, Karls ruher Institut für Technologie –\; Einladender: W. Stummer Abstr act: Weighted L²-distances can be used to build a flexible class of t ools for testing hypotheses about the unknown distribution of the unde rlying random-data generating mechanism. Such hypotheses can concern b oth one-sample and multi-sample problems. The lecture presents typical test problems\, with special emphasis on tests for multivariate norma lity and for Gaussianity in infinite-dimensional Hilbert spaces. It al so highlights the mathematical challenges in connection with deriving asymptotic results as the sample size tends to infinity. DTSTART:20231212T153000Z DTEND:20231212T163000Z LOCATION:Hörsaal H13\, Cauerstr. 11\, 91058 Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:LehrerInnenkolloquium und Weihnachtsvortrag: Sören Christense n (Christian-Albrechts-Universität zu Kiel): Ein Blick in die Medien durch die Brille des Stochastikers UID:4b36ddfe-e61a-459e-b038-bd607a342118 DESCRIPTION:Ein Blick in die Medien durch die Brille des Stochastikers –\; Vortragender: Sören Christensen\, Christian-Albrechts-Unive rsität zu Kiel –\; Einladender: A. Knauf Abstract: Mathematik pr ägt unser Leben im Kleinen wie im Großen. Bei fast allen wichtigen T hemen unserer Zeit spielen Zahlen\, Statistiken und mathematische Mode lle eine zentrale Rolle. In diesem Vortrag werden einige Beispiele nä her beleuchtet. Oft lassen sich dabei mit elementaren Überlegungen un d einem Schmunzeln interessante und verblüffende Erkenntnisse gewinne n. DTSTART:20231219T153000Z DTEND:20231219T163000Z LOCATION:Hörsaal H13\, Cauerstr. 11\, 91058 Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Kolloquium: Gianluca Crippa (Universität Basel): Anomalous Di ssipation in Fluid Dynamics UID:979c8f1e-bf42-4921-aa4c-00d27c135348 DESCRIPTION:Anomalous Dissipation in Fluid Dynamics –\; Vortragen der: Gianluca Crippa\, Universität Basel –\; Einladender: E. Wie demann Abstract: The celebrated Kolmogorov K41 theory of fully develop ed turbulence attempts to explain and quantify wild\, but typical beha vior of chaotic fluids\, most notably the lack of conservation of the total energy. The loss of energy is not due to friction between fluid molecules\, but rather to the limited regularity of the flow. Kolmogor ov’\;s theory is numerically and experimentally validated to a ve ry large extent\, however\, very little is known in rigorous mathemati cal terms. In my lecture\, I will present some aspects of Kolmogorov&# 8217\;s theory\, and illustrate recent results (in collaboration with M. Colombo and M. Sorella) on a related question for the linear advect ion equation. DTSTART:20240109T153000Z DTEND:20240109T163000Z LOCATION:Hörsaal H13\, Cauerstr. 11\, 91058 Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Kolloquium: Claudia Scheimbauer (TUM): Finite Gauge Theories a nd Higher Categories UID:04ff2960-c263-45c5-aaaa-bf019f2de73f DESCRIPTION:Finite Gauge Theories and Higher Categories –\; Vortr agende: Claudia Scheimbauer\, Technische Universität München –\ ; Einladende: C. Meusburger DTSTART:20240116T153000Z DTEND:20240116T163000Z LOCATION:Hörsaal H13\, Cauerstr. 11\, 91058 Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Kolloquium: Chenchang Zhu (Georg-August-Universität Göttinge n): Higher differential geometry and symplectic structure UID:5bb66a48-203a-4031-b792-df7122f643ef DESCRIPTION:Higher differential geometry and symplectic structure R 11\; Vortragende: Chenchang Zhu\, Georg-August-Universität Göttingen –\; Einladender: K.-H. Neeb In this talk\, we will review the hi gher groupoid approach towards higher differentiable stacks and introd uce shifted symplectic structures on them. We will give some interesti ng examples. Other topics\, such as\, possibility/path of quantisation \, will be discussed if time permits. It is based on several joint wor ks with Miquel Cueca Ten\, Florian Dorsch\, Leonid Ryvkin and Stefano Ronchi. DTSTART:20230613T143000Z DTEND:20230613T153000Z LOCATION:HS H13\, Cauerstr. 11\, Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Kolloquium: Birgit Jacob (Bergische Universität Wuppertal): P ort-Hamiltonian approach to interacting particle systems UID:cdd2b48b-261b-4c58-82c2-d6ef927e710a DESCRIPTION:Port-Hamiltonian approach to interacting particle systems –\; Vortragende: Birgit Jacob\, Bergische Universität Wuppertal –\; Einladender: M. Gugat Port-Hamiltonian systems represent an i mportant and attractive novel paradigm for the mathematical modeling o f dynamical systems. Port-Hamiltonian coupling genuinely guarantees st ability of the overall system when the individual systems are stable\, a feature that is lacking in other coupling approaches. We derive a p ort-Hamiltonian formulation of a general class of interacting particle systems driven by alignment and potential-based force dynamics which include the Cucker-Smale model with potential interaction and the seco nd order Kuramoto model. The port-Hamiltonian structure allows to char acterize conserved quantities such as Casimir functions as well as the long-time behaviour using a LaSalle-type argument on the particle lev el. Futher\, the port-Hamiltonian structure is preserved in the mean-f ield limit. DTSTART:20230620T143000Z DTEND:20230620T153000Z LOCATION:HS H13\, Cauerstr. 11\, Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Kolloquium: Bart Van Steirteghem (Friedrich-Alexander-Universi tät Erlangen-Nürnberg): Habilitationsvorstellungsvortrag Classifying multiplicy free manifolds through representation theory UID:2905dabf-e9a3-484e-9b06-2859de88a8d6 DESCRIPTION:Habilitationsvorstellungsvortrag: Classifying multiplicy f ree manifolds through representation theory –\; Vortragender: Bar t Van Steirteghem\, Friedrich-Alexander-Universität Erlangen-Nürnber g –\; Einladender: K.-H. Neeb Multiplicity free Hamiltonian manif olds are certain symplectic manifolds equipped with an action of a com pact Lie group. They are closely related to completely integrable syst ems. Through elementary examples\, I will explain how representation t heory\, using toric and spherical varieties from algebraic geometry\, makes it possible to classify such manifolds. DTSTART:20230627T143000Z DTEND:20230627T153000Z LOCATION:HS H13\, Cauerstr. 11\, Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Kolloquium: Nadja Ray (Katholische Universität Eichstätt-Ing olstadt): Effective models for reactive flow and transport in evolving porous media UID:073c441a-83c5-4227-8652-31ed93c9a276 DESCRIPTION:Effective models for reactive flow and transport in evolvi ng porous media –\; Vortragende: Nadja Ray\, Katholische Universi tät Eichstätt-Ingolstadt –\; Einladender: M. Gugat We consider reactive flow and transport in porous media. We introduce an effective model which is capable of taking into account evolving microstructure s due to mineral precipitation/dissolution. We discuss and compare pos sible parametrizations of the model\, namely by heuristic or parametri c approaches\, by multiscale modeling or machine learning techniques. The challenges in treating the model analytically are outlined and exi stence results obtained are presented. Finally\, numerical simulations are shown. DTSTART:20230704T143000Z DTEND:20230704T153000Z LOCATION:HS H13\, Cauerstr. 11\, Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Kolloquium: Michael Herty (Universität RWTH Aachen): Uncertai nty Quantification for Nonlinear Hyperbolic Differential Equations UID:8974acb1-8512-4355-94f9-7fad3b0b4c66 DESCRIPTION:Uncertainty Quantification for Nonlinear Hyperbolic Differ ential Equations –\; Vortragender: Michael Herty\, Universität R WTH Aachen –\; Einladender: M. Gugat We are interested in quantif ying uncertainties that appear in nonlinear hyperbolic partial differe ntial equations arising in a variety of applications from fluid flow t o traffic modeling. A common approach to treat the stochastic componen ts of the solution is by using generalized polynomial chaos expansions . This method was successfully applied in particular for general ellip tic and parabolic PDEsas well as linear hyperbolic stochastic equation s. More recently\, gPC methods have been successfully applied to parti cular hyperbolic PDEs using the explicit form of nonlinearity or the p articularity of the studied system structure as\, e.g.\, in the p-syst em. While such models arise in many applications\, e.g.\, in atmospher ic flows\, fluid flows under uncertain gas compositions and shallow wa ter flows\, a general gPC theory with corresponding numerical methods are still at large. Typical analytical and numerical challenges that a ppear for the gPC expanded systems are loss of hyperbolicity and posit ivity of solutions (like gas density or water depth). Any of those eff ects might trigger severe instabilities within classical finite-volume or discontinuous Galerkin methods. We will discuss properties and con ditions to guarantee stability and present numerical results on select ed examples. DTSTART:20230718T143000Z DTEND:20230718T153000Z LOCATION:HS H13\, Cauerstr. 11\, Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Kolloquium: Urs Frauenfelder (Universität Augsburg): Contacti ng the Moon UID:296a7074-85e5-44e1-861b-41617ad17118 DESCRIPTION:Contacting the Moon –\; Vortragender: Urs Frauenfelde r\, Universität Augsburg –\; Einladender: K.-H. Neeb Abstract: I n the restricted three-body problem one studies the dynamics of a mass less body attracted by two massive bodies. For example the two masses could be the sun and the earth and the massless body the moon. Or the two masses could be the earth and the moon and the massless body a sat ellite. In contrast to the two-body problem the restricted three-body problem is not integrable and shows chaotic behaviour. In the talk I w ill discuss a geometric approach to this problem and show how it is co nnected to symplectic topology and contact geometry. DTSTART:20231024T143000Z DTEND:20231024T153000Z LOCATION:Hörsaal H13\, Cauerstr. 11\, 91058 Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Kolloquium: Robert Weismantel (ETH Zürich): Integer Optimizat ion in High Dimensions UID:f664557a-c0b2-411c-9d13-49e4a15d4b30 DESCRIPTION:Integer Optimization in High Dimensions –\; Vortragen der: Robert Weismantel\, Eidgenössische Technische Hochschule Zürich –\; Einladender: T. Oertel Abstract: The topic of my talk is int eger linear optimization when the dimension is large. The goal is to d etect structural results and develop algorithms that are ideally indep endent on the dimension or depend as little as possible on it. This re quires us to assume that the underlying optimization problem has some structure such as bounded subdeterminants or specific sparsity pattern s. This will allow us to tackle central questions such as upper bounds on the distance between optimal solutions of a linear programming rel axation and its corresponding integer optimization problem. My talk is based on several papers with different coauthors that will be mention ed in the talk. DTSTART:20231107T153000Z DTEND:20231107T163000Z LOCATION:Hörsaal H13\, Cauerstr. 11\, 91058 Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Kolloquium: Matthias Kreck (Universität Bonn): Eine Alternati ve zur mathematischen Modellierung von Covid und warum sie keine Rolle spielte UID:e0431459-f091-4fe6-b2b2-e93fabc16044 DESCRIPTION:Eine Alternative zur mathematischen Modellierung von Covid und warum sie keine Rolle spielte –\; Vortragender: Matthias Kre ck\, Universität Bonn –\; Einladender: N. Neuß In der mathemati schen Modellierung von Covid wurde von den meisten Modellierern das SI R Modell benutzt. Als völliger Laie habe ich auch etwas mit dem Model l rumgespielt und fand es seltsam. Das war der Beginn einer fast zweij ährigen intensiven Zusammenarbeit mit Erhard Scholz\, in der wir ein anderes Modell entwickelt haben. Erst hinterher haben wir gemerkt\, da ss das eine diskrete Version eines Spezialfalls eines seit 100 Jahren bekannten Modells von Kermack und McKendrick ist. Ich will erklären\, aus welchem Input diese Modelle abgeleitet werden\, welche Rolle der input spielt und welches Modell besser für Covid passt. Dazu will ich darüber berichten\, dass es mir nicht gelungen ist\, dieses Modell i n die Diskussion einzubringen und ob es Alternativen für politische M aßnahmen hätte aufzeigen können. DTSTART:20230425T143000Z DTEND:20230425T153000Z LOCATION:HS H13\, Cauerstr. 11\, Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Kolloquium: Michael Baake (Universität Bielefeld): The Markov embedding problem revisited (from an algebraic perspective) UID:1c624f1b-c465-411f-9c2a-afb68ac9c27a DESCRIPTION:The Markov embedding problem revisited (from an algebraic perspective) –\; Vortragender: Michael Baake\, Universität Biele feld –\; Einladender: C. Richard It is an old question whether a given Markov matrix can occur in a Markov semigroup\, which became qui te famous through a foundational paper by Kingman from 1962. Apart fro m some general characterisations (which are rarely useful in practice) \, a complete answer was given for 3×\;3 matrices by the mid 1990s \, both for the homogeneous and the inhomogeneous case\, after which t he interest in it faded due to lack of applications. This changed with the rise of bioinformatics and the study of stochastic processes on t he basis of the nucleotide alphabet (A\, G\,C\,T)\, which at least req uires an answer for 4×\;4 matrices\, which was given only recently . In this talk\, the problem will be reviewed\, and some of the recent progress discussed\, with focus on practically useful results and on the underlying algebraic structure. DTSTART:20230502T143000Z DTEND:20230502T153000Z LOCATION:HS H13\, Cauerstr. 11\, Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Kolloquium: Michael Schuster (FAU Erlangen-Nürnberg): Nodal C ontrol and Probabilistic Constrained Optimization using the Example of Gas Networks UID:8aa35cde-aa00-4e94-a20e-c2086130e609 DESCRIPTION:Nodal Control and Probabilistic Constrained Optimization u sing the Example of Gas Networks –\; Vortragender: Michael Schust er\, FAU Erlangen-Nürnberg –\; Einladender: M. Gugat Uncertainty often plays an important role in gas transport and probabilistic cons traints are an excellent modeling tool to obtain controls and other qu antities that are robust against perturbations in e.g.\, the boundary data. We first consider a stationary gas transport model with uncertai n boundary data on networks. We provide an efficient approach based on kernel density estimation to compute the probability that random boun dary data is feasible. In this context feasible means that the pressur e corresponding to the random boundary data meets some box constraints at the network junctions. We further provide an extension of this app roach to dynamical systems. Besides we consider an optimal boundary co ntrol problem governed by a transport equation with uncertainty in the initial data and/or in the source term. The convex objective function depends on the boundary traces of the transport equation. We provide an integral turnpike property for the dynamic optimal control and the corresponding static optimal control. DTSTART:20230509T143000Z DTEND:20230509T153000Z LOCATION:HS H13\, Cauerstr. 11\, Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Kolloquium: Phan Thành Nam (Ludwig-Maximilians-Universität M ünchen): Existence and non-existence of minimizers in the liquid drop model UID:331c219f-b01e-44d5-a055-d2f3a6bcfb58 DESCRIPTION:Existence and non-existence of minimizers in the liquid dr op model –\; Vortragender: Phan Thành Nam\, Ludwig-Maximilians-U niversität München –\; Einladender: H. Schulz-Baldes The liquid drop model for atomic nuclei goes back to Gamow’\;s theory in th e 1930s. Although it is widely used in the physics literature to expla in qualitatively the critical mass in nuclear fission reactions\, many of its fundamental properties remains unknown rigorously. I will disc uss some mathematical results on the existence and nonexistence of min imizers\, as well as the connection of these results to the ionization problem for atoms. The talk is based on recent joint work with Rupert L. Frank. DTSTART:20230516T143000Z DTEND:20230516T153000Z LOCATION:HS H13\, Cauerstr. 11\, Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Kolloquium: Ingo Runkel (Universität Hamburg): Topological fi eld theory and higher categories UID:e14949c0-327c-46fa-95a1-297516473660 DESCRIPTION:Topological field theory and higher categories –\; Vo rtragender: Ingo Runkel\, Universität Hamburg –\; Einladende: C. Meusburger One way to think about topological field theories is as a bridge between topology and geometry on the one side and algebra on th e other side. One is lead to consider higher categories in algebra\, a nd one can use ideas from topology to get a new point of view on algeb raic structures. In this talk I would like to give a first glimpse at this bridge and illustrate it with some examples from algebra and an o utlook into mathematical physics. DTSTART:20230523T143000Z DTEND:20230523T153000Z LOCATION:HS H13\, Cauerstr. 11\, Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Kolloquium: Michael Harris (Columbia University): Mechanizatio n of mathematics? UID:0d6a1faf-a627-4452-bf3a-56a966ff222d DESCRIPTION:Mechanization of mathematics? –\; Vortragender: Micha el Harris\, Columbia University –\; Einladender: Bart Van Steirte ghem While everyone else is talking about ChatGPT and asking whether a rtificial intelligence really has a 10% chance of destroying civilizat ion\, mathematicians are wondering whether the new technologies will m ake human mathematics obsolete\, or better\, or both. One’\;s pos ition on the possible future mechanization of mathematics is a functio n of one’\;s view of mathematics itself. Is it a means to an end that can be achieved as well\, or better\, by a competent machine as b y a human being? If so\, what is that end\, and why are machines seen as more reliable than humans? Or is mathematics rather an end in itsel f\, a human practice that is pursued for its intrinsic value? If so\, what could that value be\, and can it ever be shared with machines? I will talk about the background to these speculations and the mathemati cal community’\;s efforts to adapt. DTSTART:20230606T143000Z DTEND:20230606T153000Z LOCATION:HS H13\, Cauerstr. 11\, Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Kolloquium: F. Catanese\, Univ. Bayreuth: Nodal Surfaces and C oding Theory UID:ad5fea70-416d-4a0d-9034-e9f32b21de54 DESCRIPTION:Nodal Surfaces and Coding Theory Vortragender: Fabrizio Ca tanese\, Universität Bayreuth Einladender: Friedrich Knop DTSTART:20221220T153000Z DTEND:20221220T163000Z LOCATION:HS H13\, Cauerstr. 11\, Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Kolloquium: T. Weich\; Univ. Paderborn: Spectral theory of hyp erbolic dynamical systems UID:785110a5-a9d8-4ada-9b96-712c946ae707 DESCRIPTION:Spectral theory of hyperbolic dynamical systems Vortragend er: Tobias Weich\, Universität Paderborn Einladender: Karl-Hermann Ne eb DTSTART:20230110T153000Z DTEND:20230110T163000Z LOCATION:HS H13\, Cauerstr. 11\, Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Kolloquium: E. Meir\, Univ. Aberdeen: Interpolations of monoid al categories by invariant theory UID:f7a8e7ae-6bae-4fb7-ace3-03cd3828b01c DESCRIPTION:Interpolations of monoidal categories by invariant theory Vortragender: Ehud Meir\, Universität Aberdeen Einladender: Catherine Meusburger DTSTART:20230117T153000Z DTEND:20230117T163000Z LOCATION:HS H13\, Cauerstr. 11\, Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Kolloquium: Xin Li\, University of Glasgow: Interactions betwe en C*-algebras\, topological dynamics and group theory UID:d9bf70d4-9133-45b3-8b63-067525b02335 DESCRIPTION:Interactions between C*-algebras\, topological dynamics an d group theory Vortagende: Xin Li\, University of Glasgow Einladender: Kang Li Abstract: C*-algebras are algebras of bounded linear operator s on Hilbert spaces. Originally introduced as a mathematical foundatio n for quantum physics\, these structures turn out to be interesting on their own right and exhibit a rich interplay with several other mathe matical disciplines. Indeed\, as I will explain\, several key ideas wh ich were initially developed to classify C*-algebras also lead to clas sification results for topological dynamical systems. At the same time \, it was discovered recently that all C*-algebras which have been cla ssified arise from dynamics in a precise sense. Surprisingly\, this ci rcle of ideas also leads to new constructions of groups which answered several open questions in group theory. DTSTART:20230124T153000Z DTEND:20230124T163000Z LOCATION:HS H13\, Cauerstr. 11\, Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Kolloquium: M. Henk\, TU Berlin: The logarithmic Minkowski Problem UID:a1fda531-164b-4168-9817-4e02dd678b6e DESCRIPTION:The logarithmic Minkowski Problem Vortragender: Martin Hen k\, TU Berlin Einladender: Timm Oertel DTSTART:20230131T153000Z DTEND:20230131T163000Z LOCATION:HS H13\, Cauerstr. 11\, Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Kolloquium: S. Hollands\, Univ. Leipzig: Black Hole Interiors UID:77c0a9c9-d154-4882-9845-ecc9f6843906 DESCRIPTION:Black Hole Interiors Vortragender: Stefan Hollands\, Unive rsität Leipzig Einladender: Gandalf Lechner DTSTART:20230207T153000Z DTEND:20230207T163000Z LOCATION:HS H13\, Cauerstr. 11\, Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Lehrerkolloquium: Albrecht Beutelspacher (Justus-Liebig-Univer sität Giessen): Mathematische Experimente: ein idealer erster Schritt in die Mathematik UID:a4365607-5d09-4aaf-bcb9-5546b4e1c74b DESCRIPTION:Mathematische Experimente: ein idealer erster Schritt in d ie Mathematik –\; Vortragender: Albrecht Beutelspacher\, Justus-L iebig-Universität Giessen –\; Einladender: A. Knauf In diesem Vo rtrag werden einige mathematische Experimente vorgestellt und ihr Pote ntial für das Lernen von Mathematik bzw. der Begegnung mit Mathematik erörtert. Besonderer Wert wird darauf gelegt\, wie sich der mathemat ische Inhalt erschließt und wie natürliche Differenzierung gelingen kann. Neben Experimenten aus dem Mathematikum in Gießen werden auch E xperimente zum Mitmachen gezeigt\, die mit einfachsten Materialien aus kommen. Ein Vortrag\, der zugleich lehrreich und vergnüglich ist. DTSTART:20230418T143000Z DTEND:20230418T153000Z LOCATION:HS H13\, Cauerstr. 11\, Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Kolloquium: David Rowe\, Univ. Mainz Emmy Noether (1882-1935): Mathematician Extraordinaire UID:27125113-0b8b-4184-bc98-27530a94618f DESCRIPTION:Emmy Noether (1882-1935): Mathematician Extraordinaire Vor tragender: David Rowe\, Univ. Mainz Einladender: Karl-Hermann Neeb Abs tract: This talk is based on a book (same title\, Springer\, 2021) tha t was based on a play: Mathematische Spaziergänge mit Emmy Noether (p erformed in Erlangen in 2019). The English-language version (Diving in to Math with Emmy Noether) will go on tour in the USA (the gods willin g!) in September. In the first part of the talk\, I’\;ll present themes from the play\, which emphasizes Noether’\;s interactions with other notable figures from the world of mathematics. After that\, we take a glance back to her days in Erlangen\, where she received an unusual education\, and then follow her first path of Göttingen\, wh ere she worked closely with Hilbert and Klein. DTSTART:20220601T103000Z DTEND:20220601T113000Z LOCATION:HS H13\, Cauerstr. 11\, Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Kolloquium: Roland Speicher\, Univ. des Saarlands\, Saarbruecken UID:a252bc37-d04b-446b-ac80-94fc01892042 DESCRIPTION:Free Probability\, Random Matrices\, and Non-Commutative R ational Functions In free probability we want to understand the distri bution of functions in non-commuting variables. I will explain what th is means and what we actually calculate. In particular\, the variables will typically be random matrices or operators on Hilbert spaces and a prominent class of functions will be given by non-commutative ration al functions. For this talk\, no prior knowledge on operator algebras or random matrices or free probability is assumed. Vortragender: Rolan d Speicher\, Univ. des Saarlands\, Saarbruecken Einladender: Gandalf L echner DTSTART:20220615T103000Z DTEND:20220615T113000Z LOCATION:HS H13\, Cauerstr. 11\, Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Kolloquium: M. Filipkovskaya\, Verkin Institute\, Ukraine: Qua litative and numerical analysis of differential-algebraic equations\, and applications UID:b7e4af24-61b4-4f1c-b04f-7be8804b1a37 DESCRIPTION:Qualitative and numerical analysis of differential-algebra ic equations\, and applications Vortragende: Dr. Maria S. Filipkovska\ , B. Verkin ILTPE of NAS of Ukraine Einladender: Karl-Hermann Neeb Abs tract: Differential-algebraic equations (DAEs) or degenerate DEs appea r as mathematical models in control theory\, where they are called des criptor systems\, radioelectronics\, cybernetics\, mechanics\, robotic s technology\, economics\, ecology and chemical kinetics. DAEs are par ticularly used in modeling various networks such as gas networks. A fe ature of a DAE is that the graphs of its solutions lie in the manifold which is determined by the algebraic part of the equation. For time-v arying semilinear DAEs\, theorems on the global solvability\, the Lagr ange and Lyapunov stability and the dissipativity are presented. We st ate numerical methods for solving semilinear DAEs and discuss applicat ions of the obtained results. Certain mathematical models for electric al circuits with nonlinear and time-varying elements are considered in detail. The Zoom link: https://fau.zoom.us/j/69560139382?pwd=SFV1L0th ZHdtUW1LR2Qrbm1uR1dOZz09 Meeting ID: 695 6013 9382 Passcode: 982205 DTSTART:20220622T103000Z DTEND:20220622T113000Z LOCATION:Zoom-Meeting\; Einwahldaten s. u. DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Kolloquium: G. de Nittis\, Pontificia Universidad Católica de Chile UID:f272c513-60db-4d79-877d-dbf66eddbd53 DESCRIPTION:The magnetic spectral triple: applications and open questi ons Vortragender: Guiseppe de Nittis\, Pontificia Universidad Católic a de Chile Einladender: Hermann Schulz-Baldes DTSTART:20220720T103000Z DTEND:20220720T113000Z LOCATION:HS H13\, Cauerstr. 11\, Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Kolloquium: Richard Montgomery\, UC Santa Cruz: From falling c ats to the N-body problem UID:817b0e94-2991-428d-ab89-159358df7c59 DESCRIPTION:From falling cats to the N-body problem Vortragender: Rich ard Montgomery\, UC Santa Cruz Einladender: Andreas Knauf Abstract: I will trace my own trajectory in mathematics and physics from gauge the ory to the N-body problem by way of the Falling Cat. My first papers w ere on the motion of an allegedly classical particle moving in a Yang- Mills field. While at MIT Jair Koiller showed me the work of Alfred Sh apere and Frank Wilczeck which induced me to understand the problem fa ced by a falling cat as a problem in gauge theory. This led to problem s in re-orienting robots and control theory which led me to subRiemann ian geometry and trying to understand what ended up being a false `the orem‘\; regarding subRiemannian minimizers. I kept up on the cat\ , simplifying it until the cat became three mass points and found myse lf working on the three-body problem. This last has dominated my work these last 20 years. DTSTART:20221018T143000Z DTEND:20221018T153000Z LOCATION:HS H13\, Cauerstr. 11\, Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Kolloquium: K. Cielibak\, Univ. Augsburg: Poincare duality for loop spaces UID:2bf265a4-4e11-4829-bbad-b0351e3f233d DESCRIPTION:Poincare duality for loop spaces Vortragender: Kai Cieliba k\, Universität Augsburg Einladender: Karl-Hermann Neeb Abstract: In 1999\, Chas and Sullivan described a number of operations on the homol ogy of a loop space which became collectively known under the name str ing topology. Subsequent studies revealed striking similarities betwee n two of these operations\, suggesting that they might be related by s ome underlying duality. It is the goal of this talk to explain that su ch a duality indeed exists and arises from an unexpected direction\, s ymplectic geometry. DTSTART:20221108T153000Z DTEND:20221108T163000Z LOCATION:HS H13\, Cauerstr. 11\, Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Kolloquium: M. Walter\, Univ. Bochum: Symmetries of Computatio nal Problems UID:0fab9b71-a6be-4e8d-9a7f-34f1f53fff04 DESCRIPTION:Symmetries of Computational Problems Vortragender: Michael Walter\, Universität Bochum Einladender: Bart van Steirteghem Abstra ct: Many computational problems are invariant under hidden symmetries. Revealing them can be essential to obtaining structural insight and f inding fast algorithms. We will give an introduction to this philosoph y\, survey some applications and connections (from algebra and geometr y to statistics and quantum information)\, and sketch how optimization in curved spaces (which arise naturally from non-commutative symmetri es) has recently led to significant progress. DTSTART:20221115T153000Z DTEND:20221115T163000Z LOCATION:HS H13\, Cauerstr. 11\, Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Kolloquium: Ch. Fewster\, Univ. York: How to measure a quantum field: New developments in mathematical quantum field theory UID:1c0cbdbe-0a94-4edd-93fb-f61635906359 DESCRIPTION:How to measure a quantum field: new developments in mathem atical quantum field theory Vortragender: Christ Fewster\, Universitä t York Einladender: Gandalf Lechner DTSTART:20221206T153000Z DTEND:20221206T163000Z LOCATION:HS H13\, Cauerstr. 11\, Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Kolloquium: tba UID:f1de527d-709d-405f-bc87-2a611b3da4f4 DESCRIPTION:NIL DTSTART:20200722T103000Z DTEND:20200722T113000Z LOCATION:HS H13\, Cauerstr. 11\, Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Kolloquium: D. Tenbrinck\, Habilitationsvortrag UID:7471ec84-867a-47d7-9a17-ae7bdca0016c DESCRIPTION:Discrete Graph Operators for Manifold-Valued Data Referent : Dr. Daniel Tenbrinck\, FAU DTSTART:20201104T113000Z DTEND:20201104T123000Z LOCATION:HS H12\, Cauerstr. 11\, Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Kolloquium: Philipp Wacker\, Habilitationsvortrag UID:6d8f8729-4298-4c99-80b2-d648d1135a05 DESCRIPTION:Mathematical Uncertainty Quantification Referent: Dr.Phill ip Wacker\, FAU DTSTART:20201111T113000Z DTEND:20201111T123000Z LOCATION:HS H12\, Cauerstr. 11\, Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Efficiently solving large-scale optimization models for highly reliable systems (Habilitationsvorstellungsvortrag) UID:9cb23b7e-d7f8-43d4-84e1-e4af92a55f93 DESCRIPTION:Vortragender: Dr. Bismark Singh Title: Efficiently solving large-scale optimization models for highly reliable systems (Habilita tionsvorstellungsvortrag) Abstract: We study a collection of optimizat ion models under uncertainty. First\, we present new theoretical resul ts for resource allocation optimization models\, that ensure highly re liable systems by employing chance constraints. For the specific model s we present\, previous research considers stochastic programs that ar e only one-stage while we extend it to two-stages. Second\, we summari ze some of our works on allocating critical medical resources for the 2009 H1N1 and the current COVID-19 pandemics. We describe how our prop osed systems are currently employed by the City of Austin\, Texas. Thi rd\, we present a few of our miscellaneous works on the design of effi cient algorithms for solving large-scale optimization models under unc ertainty\, such as a Benders decomposition algorithm for a stochastic $s –\; t$ cut problem. Our models employ actual data\, from sourc es such as the US electrical grid or the ongoing pandemic. We conclude with other examples of our ongoing work on vehicle routing and the op timality conditions of convex optimization models. Der ZOOM-Link zur V eranstaltung ist https://fau.zoom.us/j/66668569417?pwd=SXdGbEloMHRhOWt wRXk2SzUwUUxQUT09 Meeting-ID: 666 6856 9417 Kenncode: 372702 DTSTART:20211006T151500Z DTEND:20211006T161500Z LOCATION:Online DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Kolloquium: Alexander Keimer\, FAU\, Habilitationsvortrag UID:f87b1dfd-4484-4631-a46b-0d0a8d89009c DESCRIPTION:Nonlocal Conservation Laws Vortragender: Alexander Keimer Abstract: We will discuss recent advances on nonlocal conservation law s\, where part of the flux function does not depend point-wise on the density but on an integration of the density around the given space po int. This class of equations will be illustrated and motivated by appl ications in traffic flow modelling\, pedestrian flow dynamics and more . With a fixed-point approach in the proper Banach space we establish existence and uniqueness of weak solutions under rather general assump tions and render the often used Entropy condition in this context obso lete. Nonlocal conservation laws with time delay as well as discontinu ous (in space) nonlocal conservation laws are also covered by the esta blished theory and will be investigated. Finally\, the singular limit problem\, i.e.\, the question whether the solution of the nonlocal con servation law converges to the Entropy solution of the (local) conserv ation law is studied. Indeed\, for specific kernels such a result hold s which closes the gap between local and nonlocal conservation laws. DTSTART:20220504T103000Z DTEND:20220504T113000Z LOCATION:HS H13\, Cauerstr. 11\, Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Kolloquium: Stefan Metzger\, FAU\; Habilitationsvortrag On con tact angles and boundary layers: Dynamic boundary conditions for phase -field models UID:beb020c2-64a3-49ed-98a1-f95b75157ade DESCRIPTION:On contact angles and boundary layers: Dynamic boundary co nditions for phase-field models Vortragender: Stefan Metzger\, FAU\; H abilitationsvortrag Abstract: Important qualitative features of two-ph ase systems related to phase separation processes can be described by Cahn-Hilliard equations. For these equations\, many different boundary conditions are available. While the simplest boundary conditions dict ate a static contact angle and prevent flux across the boundary\, more sophisticated models use additional partial differential equations to describe effects like dynamic contact angles or the presence of a bou ndary layer. In this talk\, we will discuss the numerical treatment of Cahn-Hilliard-type dynamic boundary conditions that were introduced i n the recent years to approximate boundary layers (cf. Goldstein\, Mir anville\, Schimperna\, Physica D\, 2011\; Liu\, Wu\, Arch. Ration. Mec h. Anal.\, 2019\; Knopf\, Lam\, Liu\, M.\, M2AN\, 2021). From the math ematical point of view\, all of these models describe evolutions\, whi ch minimize Ginzburg-Landau-type free energies in the bulk and on the surface\, but differ in the considered adsorption processes. We will p resent a fully discrete linear finite element scheme based on the scal ar auxiliary variable approach. Using that this discretization is unco nditionally stable w.r.t. a modified energy\, we are able to establish a convergence result and thereby also guarantee the existence of weak solutions to the original problem. DTSTART:20220525T103000Z DTEND:20220525T113000Z LOCATION:HS H13\, Cauerstr. 11\, Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Kolloquium: Marie-Therese Wolfram\, Warwick: Modeling and cali bration of pedestrian dynamics UID:6c97498b-8d79-4035-be8d-b31d5e310ae1 DESCRIPTION:Modeling and calibration of pedestrian dynamics Vortragend e: Dr. Marie-Therese Wolfram\, Univ. of Warwick Veranstalter: Martin B urger Abstract: In this talk we present different modeling approaches to describe and analyse the dynamics of large pedestrian crowds. We st art with the individual microscopic description and derive the respect ive partial differential equation (PDE) models for the crowd density. Hereby we are particularly interested in identifying the main driving forces\, which relate to complex dynamics such as lane formation in bi directional flows. We then analyse the time-dependent and stationary s olutions to these models\, and provide interesting insights into their behavior at bottlenecks. We conclude by discussing how the Bayesian f ramework can be used to estimate unknown parameters in PDE models usin g individual trajectory data. DTSTART:20200527T103000Z DTEND:20200527T113000Z LOCATION:HS H13\, Cauerstr. 11\, Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Kolloquium: P. Cannarsa\, Univ. Roma Tor Vergata\; Interessent en wenden sich bitte an Herrn Marius Yamakou UID:87c91d00-2c51-42c3-8def-28de6a1f26e2 DESCRIPTION:Propagation of Singularities for Solutions to Hamilton-Jac obi Equations Vortragende: Prof. Dr. Piermarco Cannarsa\, Univ. of Rom a Tor Vergata\, President of UMI Veranstalter: Enrique Zuazua Abstract : The study of the structural properties of the set of points at which the viscosity solution of a first order Hamilton-Jacobi equation fail s to be differentiable—\;in short\, the singular set—\;start ed with the paper [On the singularities of viscosity solutions to Hami lton-Jacobi-Bellman equations\, Indiana Univ. Math. J. 36 (1987)\, pp. 501-524] by Mete Soner and myself. These thirty years have registered enormous progress in the comprehension of the way how singularities pr opagate: we have developed a fine measure theoretical analysis of the singular set\, we can describe singular dynamics by generalised charac teristics\, and we have even found deep topological applications to th e structure of the cut locus on a Riemannian manifold. In this talk\, I will revisit the milestones of the theory and discuss possible devel opments and open problems. DTSTART:20200603T103000Z DTEND:20200603T113000Z LOCATION:Onlineseminar\; HS H13\, Cauerstr. 11\, Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Kolloquium: G. Carlier\, Univ. Paris-Dauphine/Calculus of Vari ations and Optimal Transport UID:127f68bf-e522-4372-82ee-b74265c4eeb3 DESCRIPTION:Calculus of Variations and Optimal Transport Vortragende: Prof. Dr. Guillaume Carlier\, Univ. Dauphine-Paris Veranstalter: Enriq ue Zuazua DTSTART:20200610T103000Z DTEND:20200610T113000Z LOCATION:HS H13\, Cauerstr. 11\, Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Kolloquium: J. Kellendonk\, Univ. Lyon 1: tba UID:ed18eeb1-2789-446c-8f5a-17c6dfc8dea9 DESCRIPTION:tba Vortragende: Prof. Dr. Johannes Kellendonk\, Univ. Lyo n 1 Veranstalter: Herrmann Schulz-Baldes DTSTART:20200624T103000Z DTEND:20200624T113000Z LOCATION:HS H13\, Cauerstr. 11\, Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Lehrerkolloquium: R. vom Hofe/Grundvorstellungen als Basis fü r inhaltliches Denken UID:4d77deb5-d1bd-4edc-af2b-3325ccc32a95 DESCRIPTION:Grundvorstellungen als Basis für inhaltliches Denken Vort ragende: Prof. Dr. Rudolf vom Hofe\, Univ. Bielefeld Veranstalter: Kar el Tschacher Abstract: Mathematische Problemlösungsprozesse sind stet s mit intuitiven Vorstellungen und Begleitannahmen verbunden\, die den Lösungsweg mehr oder weniger beeinflussen. Im günstigen Fall könne n sich diese zu tragfähigen Grundvorstellungen entwickeln\, die eine Basis für inhaltliches mathematisches Denken bilden. Intuitive Annahm en können aber auch in die Irre führen\, wenn sie sich zu unbewusst wirksamen Fehlvorstellungen verfestigen. Es stellt sich daher die Frag e\, wie man mit diesem Bereich umgeht\, ob man etwa annimmt\, dass sic h adäquate Vorstellungen von selbst einstellen\, oder ob man die Ausb ildung von Grundvorstellungen bewusst begleitet und fördert. Im Vortr ag werden theoretische\, methodische und praktische Perspektiven des G rundvorstellungskonzepts aufgezeigt und anhand von konstruktiven Beisp ielen aus der Sekundarstufe erläutert. DTSTART:20200701T103000Z DTEND:20200701T113000Z LOCATION:HS H13\, Cauerstr. 11\, Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Kolloquium: tba UID:b64e0983-7313-4c82-9db3-38d266d2494f DESCRIPTION:NIL DTSTART:20200708T103000Z DTEND:20200708T113000Z LOCATION:HS H13\, Cauerstr. 11\, Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Kolloquium: A. Basu\, ISRU\, ISI Kolkata UID:5de68a25-269b-4ac4-bc57-48070328f029 DESCRIPTION:tba Vortragende: Prof. Dr. Ayanendranath Basu\, Indisches Statistisches Institut in Kolkata Veranstalter: Wolfgang Stummer DTSTART:20200715T103000Z DTEND:20200715T113000Z LOCATION:HS H13\, Cauerstr. 11\, Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Lehrerkolloquium: M. Sperber\, Programmieren lernen - wozu und vor allem wie? UID:788e61d0-42c6-40c7-bc80-ebdeedc56202 DESCRIPTION:Programmieren lernen –\; wozu und vor allem wie? Refe rent: Dr. Michael Sperber\, Active Group GmbH\, Tübingen Veranstalter : Nicolas Neuss Abstract: Wie wurden wir zu Entwicklerinnen und Entwic klern? Und wie können wir anderen dabei helfen\, es zu werden? (Beim aktuellen Fachkräftemangel in der IT wäre das ja ganz praktisch.) So llten wir das überhaupt tun –\; sind unsere Fähigkeiten von all gemeinem Interesse? Was sind das für Fähigkeiten? Die gemeinschaftli che Erkundung kreativer Räume\, die einsame Anwendung mathematischer Techniken auf die Konstruktion komplexer Systeme oder das Weiterbastel n an amorphen Gebilden? Dass die meiste Software durch Basteln entsteh t\, haben wir hauptsächlich den dominanten Ausbildungsansätzen zu ve rdanken: Die ziehen Beispiele an den Lernenden vorbei ohne definierten methodischen Ansatz –\; und funktionieren dementsprechend nicht. Falls also die Software der Zukunft und ihre Auswirkung auf die Gesel lschaft besser werden soll als die deprimierende Gegenwart\, müssen w ir die Ausbildung tiefgreifend ändern. Zum Glück ist das möglich un d –\; wenn wir das tun –\; haben wir als Software-Menschen g roßes Potenzial\, den Wert von gründlichem Zuhören\, gründlicher A nalyse\, Selbstkritik\, einem Auge für Details und systematischer Abs traktion zu demonstrieren\, und was für erstaunliche Kreativität aus diesen Grundfähigkeiten entspringen kann. Der Vortrag berichtet aus den Erfahrungen von 30 Jahren Lehre in der Programmierung in akademisc hen\, professionellen und persönlichen Umfeldern und zeigt\, wie jede und jeder ihn anwenden kann –\; auf Kolleginnen und Kollegen\, S chülerinnen und Schüler\, Kinder und vielleicht sogar sich selbst. DTSTART:20200204T153000Z DTEND:20200204T163000Z LOCATION:Hörsaal H13\, Cauerstr. 11\, Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Kolloquium: K. Schratz\, KIT UID:5aa2cf03-ff95-4d00-9386-15b6952b7180 DESCRIPTION:tba Vortragende: JProf. Dr. Katharina Schratz\, KIT Karlsr uher Institut für Technologie Veranstalter: Enrique Zuazua DTSTART:20200422T103000Z DTEND:20200422T113000Z LOCATION:HS H13\, Cauerstr. 11\, Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Kolloquium: M. Tucsnak\, Univ. Bordeaux UID:2e7382b8-658c-464f-b35a-8f8477b99472 DESCRIPTION:Large time behavior in some fluid-interaction problems Vor tragende: Prof. Dr. Marius Tucsnak\, Univ. Bordeaux Veranstalter: Enri que Zuazua Abstract: We consider several systems modelling the motion of rigid bodies in a viscous fluid. We discuss the long time behavior of solutions in terms of the fluid properties (incompressible or compr essible) and on the geometric setting (bounded or unbounded domains in one or three space dimensions. The focus is on the adiabatic piston p roblem in one space dimension (compressible case) and on the large tim e behavior of a solid moving in an unbounded three dimensional incompr essible viscous fluid. DTSTART:20200429T103000Z DTEND:20200429T113000Z LOCATION:Online (contact marius.yamakou@fau to get the data for the VC) DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Kolloquium: Prof. Andrea Breard\, Université Paris-Saclay UID:886a2ce2-ef06-42a5-a801-50fb6744dc2d DESCRIPTION:The Li Shanlan Identity and its argumentative mode Vortrag ende: Prof. Andrea Breard\, Université Paris-Saclay Veranstalter: Enr ique Zuazua Abstract: Attitudes towards reasoning in mathematics were seldom spelled out explicitly in texts from early modern China. A hist orical shift nevertheless can be observed after the second wave of inf lux of Western modes of argumentation and proof during the second half of the 19th century. Taking the well known Li Renshu combinatorial id entity in Li Shanlan’\;s 李善蘭 (1811-1882) Comparable Categor ies of Discrete Accumulations (Duoji bilei 垛積比纇\, 1867) as a c ase study\, the talk investigates the epistemology and history of a sp ecific mode of reasoning underlying the combinatorial procedures liste d rhetorically and illustrated visually in this work\, arguing that th ey reflect a mode of nineteenth-century mathematical argumentative pra ctice\, merging analogical reasoning with practices of (incomplete) in duction found in foreign mathematical texts\, which Li Shanlan himself had translated into Chinese. Li is a particularly interesting and ori ginal figure since he taught and worked in mathematics in a compartmen talized fashion: either in purely traditional Chinese style or by adop ting a syncretistic mathematical language with strong cultural compone nts\, mixing\, for example\, more specifically in his combinatorial wo rk\, practices of diagrammatic representations of finite series with r hetorical inductive arguments. This kind of mathematical discourse pla ces Li Shanlan historically within the broader issue of the constructi on of modern global mathematics and reveals him as an individual media tor who established connections that crossed seemingly insurmountable epistemological borders between European and Chinese scientific practi ces and linguistic cultures that were claimed to be incommensurable. DTSTART:20200506T103000Z DTEND:20200506T113000Z LOCATION:Online (contact marius.yamakou@fau to get the data for the VC) DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Kolloquium: M. Fornaiser\, TUM: Learning and Sparse Control of Multiagent Systems UID:bba2baa0-8221-41a2-99b4-26616a768824 DESCRIPTION:Learning and Sparse Control of Multiagent Systems Vortrage nde: Prof. Dr. Massimo Fornaiser\, TU München Veranstalter: Enrique Z uazua Abstract: In the past decade there has been a large scope of stu dies on mathematical models of social dynamics. Self-organization\, i. e.\, the autonomous formation of patterns\, has been so far the main d riving concept. Usually first or second order models are considered wi th given predetermined nonlocal interaction potentials\, tuned to repr oduce\, at least qualitatively\, certain global patterns (such as floc ks of birds\, milling school of fish or line formations in pedestrian flows\, etc.). However\, it is common experience that self-organizatio n of a society does not always spontaneously occur. In the first part of the talk we address the question of whether it is possible to exter nally and parsimoniously influence the dynamics\, to promote the forma tion of certain desired patterns. In particular\, we address the issue of finding the sparsest control strategy for finite agent models in o rder to lead the dynamics optimally towards a given outcome. We eventu ally mention the rigorous limit process connecting finite dimensional sparse optimal control problems with ODE constraints to an infinite di mensional sparse mean-field optimal control problem with a constraint given by a PDE of Vlasov-type\, governing the dynamics of the probabil ity distribution of the agent population. Moreover\, often in practice we do not dispose of a precise knowledge of the governing dynamics. I n the second part of this talk we present a variational and optimal tr ansport framework leading to an algorithmic solution to the problem of learning the interaction potentials from the observation of the dynam ics of a multiagent system. Reference: M. Fornasier. Learning and spar se control of multiagent systems\, In Proc. 7thECM\, pp: 551â€581 D OI: 10.4171/176-1 https://www-m15.ma.tum.de/foswiki/pub/M15/Allgemeine s/PublicationsEN/Massimo_Fornasier_proc_7thECM.pdf https DTSTART:20200513T103000Z DTEND:20200513T113000Z LOCATION:HS H13\, Cauerstr. 11\, Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Kolloquium: tba UID:86b6303f-5183-44f3-9b09-4b92e9ae1e0e DESCRIPTION:NIL DTSTART:20200520T103000Z DTEND:20200520T113000Z LOCATION:HS H13\, Cauerstr. 11\, Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Kolloquium: V. Bach\, A New Approach to Classical Statistical Mechanics UID:4bdfbbab-cac0-48fb-a850-036218ef3a43 DESCRIPTION:A New Approach to Classical Statistical Mechanics Referent : Prof. Dr. Volker Bach\, Technische Universität Braunschweig Veranst alter: Andreas Knauf Abstract: Some thirty years ago\, a natural Lapla cian operator has become a central object of the mathematical study of classical statistical mechanics (as part of probablity). The variant chosen by Helffer and Sjöstrand in the early 1990ies is the Witten La placian found in a seminal paper of Witten a decade before in a geomet ric context. The link Helffer and Sjöstrand established\, known as th e Helffer-Sjöstrand Formula\, is an identity between (truncated) corr elation functions and the resolvent of the Witten Laplacian. Through t his identity\, spectral theory of linear operators becomes a central m athematical tool for the analysis of classical mechanical systems. In the lecture\, the link between classical statistical mechanics and spe ctral theory is reviewed on the example of an Ising-type model with re al-valued spins. Basic questions such as existence of thermodynamic li mits and thermodynamic potentials and the presence or absence of phase transitions are addressed. Advantages and disadvantages of the method and its power will be discussed. New results presented here are joint work with Fiona Gottschalk. DTSTART:20191126T153000Z DTEND:20191126T163000Z LOCATION:Hörsaal H13\, Cauerstr. 11\, Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Kolloquium: R. Farwig\, Von Jean Leray zum Millenniumsproblem- die Navier-Stokes-Gleichungen UID:bc7f187c-2b25-4902-be84-8a6156acfa0f DESCRIPTION:Von Jean Leray zum Millenniumsproblem-die Navier-Stokes-Gl eichungen Referent: Prof. Dr. Reinhard Farwig\, TU Darmstadt Veranstal ter: Eberhard Baensch Abstract: Die Navier-Stokes-Gleichungen\, ein ni chtlineares System partieller Differentialgleichungen\, sind das wicht igste Modell zur Beschreibung der Strömung viskoser\, inkompressibler Flüssigkeiten. Eine fundamentale Arbeit zur Existenz von Lösungen g eht auf Jean Leray (1934) zurück\, lässt aber einige entscheidende F ragen zur Regularität und Eindeutigkeit offen. Der Vortrag stellt zun ächst die mathematischen Schwierigkeiten in der Analysis der Navier-S tokes-Gleichungen vor und bespricht kurz die wichtigsten Ergebnisse vo n 1934 bis heute. Anschließend wird das berühmte Regularitätsproble m behandelt\, welches als eines der sieben Millenniumsprobleme des Cla y Mathematics Institute im Jahre 2000 einer breiteren Öffentlichkeit bekannt wurde: Sind die sog. schwachen Lösungen von J. Leray und E. H opf im dreidimensionalen Fall für alle Zeiten regulär? Dieses Proble m tritt sowohl aus mathematischen als auch physikalischen Gründen im zweidimensionalen Fall nicht auf: auch schwache Lösungen sind dort gl att und eindeutig. Zum Abschluss werden neue Ergebnisse zur Nicht-Eind eutigkeit und zur Konstruktion von Lösungen mit Singularitäten erlä utert. DTSTART:20191203T153000Z DTEND:20191203T163000Z LOCATION:Hörsaal H13\, Cauerstr. 11\, Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Weihnachtsvorlesung des Departments Mathematik UID:3b1a93e6-5456-49a4-97a7-b33db4e9fd72 DESCRIPTION:Weihnachtsfeier des Departments Mathematik mit den Studierenden DTSTART:20191210T150000Z DTEND:20191210T173000Z LOCATION:H12 und Übung 4\, Cauerstraße 11\, 91058 Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Kolloquium: E. Trélat\, On the turnpike property UID:4bd81fb7-24e9-4656-8b5e-f2a31b607f5b DESCRIPTION:On the turnpike property Referent: Prof. Dr. Emmanuel Tré lat\, Sorbonne Université Laboratoire Jacques-Louis Lions\, CNRS\, Pa ris\, Frankreich Veranstalter: Enrique Zuazua Abstract: The turnpike p roperty was discovered in the 50’\;s by the Nobel prize Samuelson in econometry. It stipulates that the optimal trajectory of an optima l control problem in large time remains essentially close to a steady state\, itself being the optimal solution of an associated static opti mal control problem. We have established the turnpike property for gen eral nonlinear finite and infinite dimensional optimal control problem s\, showing that the optimal trajectory is\, except at the beginning a nd the end of the time interval\, exponentially close to some (optimal ) stationary state\, and that this property holds as well for the opti mal control and for the adjoint vector coming from the Pontryagin maxi mum principle. We prove that the exponential turnpike property is due to an hyperbolicity phenomenon which is intrinsic to the symplectic fe ature of the extremal equations. We infer a simple and efficient numer ical method to compute optimal trajectories in that framework\, in par ticular an appropriate variant of the shooting method. The turnpike pr operty turns out to be ubiquitous and the turnpike set may be more gen eral than a single steady-state\, like for instance a periodic traject ory. We also show the property of shape turnpike for PDE models in whi ch a subdomain evolves in time according to some optimization criterio n. DTSTART:20200107T153000Z DTEND:20200107T163000Z LOCATION:HS H13\, Cauerstr. 11\, Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Kolloquium: P. Maaß\, tba UID:1f2d137a-d43e-4480-8c65-5622e8cc4263 DESCRIPTION:tba Referent: Prof. Dr. Dr. h. c. Peter Maaß\, Universit ät Bremen Veranstalter: Eberhard Baensch DTSTART:20200114T153000Z DTEND:20200114T163000Z LOCATION:Hörsaal H13\, Cauerstr. 11\, Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Kolloquium: E. Schrohe\, Index Theory and Quantization UID:ebbb4819-476c-4cdb-a00f-8007f461d3bc DESCRIPTION:Index Theory and Quantization Referent: Prof. Dr. Elmar Sc hrohe\, Leibniz Universität Hannover Veranstalter: Karl-Hermann Neeb Abstract: The talk starts with an introduction to index theory for dif ferential operators. We then consider operator algebras associated wit h canonical transformations. It turns out that this is a rather genera l concept encompassing many known situations. We introduce a notion of ellipticity which implies the Fredholm property and sketch an approac h to the index theory for these operators. DTSTART:20200121T153000Z DTEND:20200121T163000Z LOCATION:Hörsaal H13\, Cauerstr. 11\, Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Kolloquium: R. S. Hilscher\, Oscillation theory for linear Ham iltonian differential systems UID:dbb0c8ac-ff2c-4bfa-82eb-1cbf9443c371 DESCRIPTION:Oscillation theory for linear Hamiltonian differential sys tems Referent: Prof. RNDr. Roman Simon Hilscher DSc.\, Masaryk Univers ity\, Brno\, CZ Veranstalter: Hermann Schulz-Baldes Abstract: In this talk we discuss recent developments in the oscillation theory of linea r Hamiltonian differential systems\, with a special attention to Sturm ian separation and comparison theorems. We present a theory which avoi ds the traditional controllability assumption and applies both in the regular and singular case. DTSTART:20200128T153000Z DTEND:20200128T163000Z LOCATION:HS H13\, Cauerstr. 11\, Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Kolloquium des Departments Mathematik UID:341b5766-431d-49d1-a5a9-71eb3fd9becf DESCRIPTION:Low-rank tensor methods for uncertain PDE-constrained opti mization Referent: Prof. Dr. Peter Benner\, MPI Magdeburg Veranstalter : Eberhard Baensch Abstract: We discuss optimization and control of un steady partial differential equations (PDEs)\, where some coefficients of the PDE as well as the control may be uncertain. This may be due t o a lack of knowledge about the exact physical parameters\, like mater ial properties describing a real-world problem (epistemic uncertainty) \, or the inability to apply a computed optimal control exactly in pra ctice. Using a stochastic Galerkin space-time discretization of the op timality system resulting from such PDE-constrained optimization probl ems under uncertainty leads to large-scale linear or nonlinear systems of equations in saddle point form. Nonlinearity is treated with a Pic ard-type iteration in which linear saddle point systems have to be sol ved in each iteration step. Using data compression based on separation of variables and the tensor train (TT) format\, we show how these lar ge-scale indefinite and (non)symmetric systems\, typically having $10^ 8$ to $10^{15}$ unknowns\, can be solved without the use of HPC techno logy. The key observation is that the unknown and the data can be well approximated in a new block TT format that reduces complexity by seve ral orders of magnitude. As examples\, we consider control and optimiz ation problems for the linear heat equation\, the unsteady Stokes and Stokes-Brinkman equations\, as well as the incompressible unsteady Nav ier-Stokes equations. The talk reviews the results published in [1\, 2 ] and provides new results for the Navier-Stokes case. DTSTART:20190611T143000Z DTEND:20190611T153000Z LOCATION:HS H13 DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Kolloquium des Departments Mathematik UID:f5509fd7-c1f0-4072-957d-fc6984b43969 DESCRIPTION:Time and Entropy Referent: Prof. Dr. Vojkan Jaksic\; McGil l University\, Montreal Veranstalter: Andreas Knauf Abstract: This tal k concerns mathematical theory of the so-called Fluctuation Relation ( FR) and Fluctuation Theorem (FT) in context of dynamical systems relev ant to physics. The FR refers to a certain universal identity linked t o statistics of entropy production generated by a reversal operation a nd FT to the related mathematical large deviations result. The discove ry of FR goes back to numerical experiments and Evans\, Cohen and Morr is (1993) and theoretical works of Evans and Searles (1994)\, Gallavot ti and Cohen (1995). These discoveries generated an enormous body of n umerical\, theoretical and experimental works which have fundamentally altered our understanding of non-equilibrium physics\, with applicati ons extending to chemistry and biology. In this talk I will introduce modern theory of FR and FT on an example and comment on a current rese arch program on this topic. DTSTART:20190618T143000Z DTEND:20190618T153000Z LOCATION:HS H13\, Cauerstr. 11\, Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Kolloquium des Departments Mathematik UID:092652ff-5d97-4aad-8aac-b2a45f211b00 DESCRIPTION:C*-algebras associated to semigroups and number fields Ref erent: Prof. Dr. Siegfried Echterhoff\, Universität Münster Veransta lter: Hermann Schulz-Baldes Abstract: To many mathematical objects one can naturally associate C*-algebras which reflect important propertie s of the underlying objects. In this lecture we study C*-algebras asso ciated to semigroups. We show that in many important cases there are n ice formulas for the computation of the K-theory groups of these algeb ras. This applies in particular for the multiplicative semi group $R^t imes$ and the $ax+b$-semigroup $Rrtimes R^{times}$ of the ring of inte gers $R$ in a number field $K$\, and it turns out that the $K$-theory groups of the associated $C^*$-algebras are strongly connected to the ideal class groups of the ring $R$. This lecture is based on joint wor k with Joachim Cuntz and Xin Li. DTSTART:20190625T143000Z DTEND:20190625T153000Z LOCATION:HS H13 DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Kolloquium des Departments Mathematik UID:292640f9-f569-4c7b-94c5-e04684dc5803 DESCRIPTION:Lehrerkolloquium: Be prepared…\;? Was bedingt Studien erfolg im ersten Studiensemester Mathematik? Referent: Prof. Dr. Stefa n Ufer\, LMU München Veranstalter: Karel Tschacher Abstract: Studiena bbruchsquoten sowie theoretische Analysen weisen darauf hin\, dass der Beginn eines Studiums mit Schwerpunkt Mathematik viele Studierende vo r große Probleme stellt. Als Ursachen werden in der Literatur spezifi sche Anforderungen des Mathematikstudiums\, die spezifische Lehr-Lern- Kultur in einem solchen Studium\, sowie die individuellen Voraussetzun gen der Studierenden benannt. Der Vortrag fokussiert auf die Rolle ver schiedener individueller Voraussetzung von allgemeiner Schulleistung u nd Vorwissen bis hin zu Interesse an verschiedenen Aspekten des Fachs Mathematik. Vorgestellt werden Ergebnisse einer Reihe von längsschnit tlich angelegten Studien im ersten Studiensemester Mathematik\, die je weils unterschiedliche Prädiktorbereiche in den Blick nehmen und dere n Bedeutung für den Lernerfolg\, aber auch für die Studienzufriedenh eit im ersten Semester eines Mathematikstudiums untersuchen. DTSTART:20190702T143000Z DTEND:20190702T153000Z LOCATION:HS H13\, Cauerstr. 11\, Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Kolloquium: F. den Hollander\, Exploration on Dynamic Networks UID:039fe130-d164-4c30-a266-f62ab5664228 DESCRIPTION:Exploration on Dynamic Networks Referent: Frank den Hollan der\, Leiden University\, The Netherlands Veranstalter: Andreas Greven Abstract: Search algorithms on networks are important tools for the o rganisation of large data sets. A key example is Google PageRank\, whi ch assigns a numerical weight to each element of a hyperlinked set of documents\, such as the World Wide Web\, with the purpose of character ising its relative importance within the set. The assignment is achiev ed by exploration. Complex networks are modelled as random graphs. Sea rch algorithms are modelled as random walks. The mixing time of a rand om walk on a random graph is the time it needs to approach its equilib rium distribution. The characterisation of the mixing time has been th e subject of intensive study. Many real-world networks are dynamic in nature. It is therefore natural to study random walks on dynamic rando m graphs. In this talk we focus on one particular example\, namely\, a random graph with prescribed degrees. We investigate what happens to the mixing time when edges are randomly rewired while the exploration is in progress. We identify three regimes in the limit as the graph be comes large: fast\, moderate\, slow dynamics. These regimes exhibit su rprising behaviour. The lecture is targeted at a general mathematics a udience. No prior knowledge is assumed of network theory or probabilit y theory. Joint work with Luca Avena (Leiden)\, Hakan Guldas (Leiden) and Remco van der Hofstad (Eindhoven). DTSTART:20191105T153000Z DTEND:20191105T163000Z LOCATION:Hörsaal H13\, Cauerstr. 11\, Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Kolloquium: N. Drago\, Ricci Flow and algebraic quantum field theory UID:a67d4746-cbc9-4aad-9133-a0b05efd3561 DESCRIPTION:Ricci Flow and algebraic quantum field theory Referent: Dr . Nicolò Drago \,Universität Regensburg Veranstalter: Karl-Hermann N eeb Abstract: The Ricci flow has been introduced in the mathematical l iterature in the early eighties by Hamilton. It also appeared independ ently in the context of quantum field theory thanks to the early works of Friedan within the analysis of nonlinear Sigma models (NLsM). Ther ein\, the Ricci flow has been heuristically derived from the anomalous scaling behaviour of the Lagrangian underlying the theory. In this ta lk we present a rigorous derivation of the Ricci flow on firm mathemat ical grounds. For that\, we will discuss the algebraic approach to NLs Ms and the concept of renormalization group. DTSTART:20191119T153000Z DTEND:20191119T163000Z LOCATION:Hörsaal H13\, Cauerstr. 11\, Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Particles in Lipid Membranes UID:b37e35d9-fede-405d-9891-4a7e21181f63 DESCRIPTION:Referent: Prof. Dr. Ralf Kornhuber\, Freie Universität Be rlin Veranstalter: Nicolas Neuss DTSTART:20190115T153000Z DTEND:20190115T163000Z LOCATION:Hörsaal H 13\, Cauerstr. 11\, 91058 Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:On buttons and balls that cannot run away UID:9913dd27-5c3e-43ae-9fe7-fab709c1106a DESCRIPTION:Referent: Prof. Dr. Bernd Kawohl\, Universität Köln Vera nstalter: Nicolas Neuss Abstract: When is the cross section of a pipe perfectly circular? When its width is independent of the direction in which I measure it\, say\, with a large caliper? The answer is no\, an d the fact that this answer was not known to some had tragic consequen ces\, because it contributed to the Challenger desaster. In my talk I present two- and three-dimensional sets of constant width and some of their surprising properties. They can be used to construct drills whic h drill square holes\, for instance\, or buttons and balls that cannot roll away. I shall also report on progress in the proof of a mathemat ical conjecture related to these bodies. DTSTART:20190122T153000Z DTEND:20190122T163000Z LOCATION:Hörsaal H 13\, Cauerstr. 11\, 91058 Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Aperiodic structures in Lie groups: A tale of fractal donuts a nd magnetic quasicrystals UID:aedd753b-2843-46db-9678-5d05abb07502 DESCRIPTION:Referent: Prof. Dr. Tobias Hartnick\, Justus-Liebig-Univer sität Gießen Veranstalter: Karl-Hermann Neeb DTSTART:20190129T153000Z DTEND:20190129T163000Z LOCATION:Hörsaal H 13\, Cauerstr. 11\, 91058 Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Mean-field approaches to interacting particles: asymptotics\, numerical methods and applications UID:7a332451-75d2-4b29-958c-f66620723796 DESCRIPTION:Referent: Prof. Dr. Axel Klar\, TU Kaiserslautern Veransta lter: Eberhard Bänsch Abstract: The talk will discuss mean-field hier archies derived from (stochastic) interacting particle systems. These hierarchies include nonlinear kinetic Fokker-Planck equations and thei r hydrodynamic and scalar approximations. We will review the asymptoti c derivation of the equations and discuss Semi-Lagrangian and Arbitrar y-Lagrangian-Eulerian numerical schemes as well as asymptotic preservi ng approaches for the transition between the equations of the hierarch y. Finally\, applications to granular flow\, virtual fleece production and pedestrian flow simulations are presented. DTSTART:20190205T153000Z DTEND:20190205T163000Z LOCATION:Hörsaal H 13\, Cauerstr. 11\, 91058 Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Kolloquium des Departments Mathematik UID:db0335ab-bcaa-4a2c-8436-d7ef67900f47 DESCRIPTION:Algorithmic Hypergraph Theory and Applications Referent: P rof. Dr. Ralf Borndörfer\, FU Berlin und ZIB Veranstalter: Alexander Martin DTSTART:20190507T143000Z DTEND:20190507T153000Z LOCATION:HS H13\, Cauerstr. 11\, Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Kolloquium des Departments Mathematik UID:04f04527-d3b8-42da-901e-e3fa858cc3ab DESCRIPTION:Unitary Control of Quantum Systems in Finite and Infinite Dimensions Referent: Prof. Dr. M. Keyl\, Freie Universität Berlin Ver anstalter: Karl-Hermann Neeb Abstract: Quantum control theory studies the dynamics of quantum systems which can be manipulated\, e.g.\, by e xternal controls like electro-magnetic fields. Mathematically\, one of the central topics in this framework is the decision problem of contr ollability: Can we express an arbitrary unitary on the system’\;s Hilbert space as a time-evolution operator of the given dynamics with appropriate controls? In finite dimensions this question can be compl etely answered in a Lie-algebraic framework. Infinite dimensions\, on the other hand\, trigger more challenging mathematics and require meth ods from operator analysis and (extensions of) infinite dimensional Li e theory. This talk will provide an introduction into this topic\, and an overview on some of its central questions and results. In finite d imensions we show in particular how a system Lie algebra can be associ ated to a quantum control system\, which leads to an easy condition fo r deciding controllabiliy: the celebrated Lie algebra rank conditon. T he second part of the talk shows under which assumptions the finite di mensional results can be translated more or less directly to infinite dimensions —\; now using infinite dimensional algebras and groups \, and the strong instead of the norm topology. Beyond these assumptio ns a number of interesting\, new open questions arise\, which we will briefly sketch in an outlook. DTSTART:20190514T143000Z DTEND:20190514T153000Z LOCATION:HS H13\, Cauerstr. 11\, Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Kolloquium des Departments Mathematik UID:96e5daae-d7af-41ae-8c63-792e969d6996 DESCRIPTION:Uniqueness\, stability and single measurement recovery for the fractional Calderon problem Referent: Dr. Angkana Rüland\, MPI L eipzig Veranstalter: Martin Burger Abstract: In this talk I discuss a nonlocal inverse problem\, the fractional Calderon problem. This is an inverse problem for a fractional Schrödinger equation in which one s eeks to recover information on an unknown potential by exterior measur ements. In the talk\, I address uniqueness and stability of the infini te data problem as well as uniqueness and recovery from a single measu rement. These properties are based on the very strong unique continuat ion and approximation properties of fractional Schrödinger operators\ , which are of independent interest and which I also discuss in the ta lk. This is based on joint work with T. Ghosh\, M. Salo and G. Uhlmann . DTSTART:20190528T143000Z DTEND:20190528T153000Z LOCATION:HS H13\, Cauerstr. 11\, Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Habilitationsvortrag: Combinatorial Optimization in Logistics - Structural Analysis and Online Algorithms UID:125818fa-85f5-4d93-b72e-49bef11c6e32 DESCRIPTION:Referent: Andreas Bärmann Veranstalter: Alexander Martin Abstract: In the field of logistics\, as in many other fields of plann ing\, the ability to take decisions in real time is becoming more and more important. In railway traffic this comprises\, for example\, the rescheduling of trains in the case of delays or the reassignment of re sources like locomotives or drivers. Being able to solve such problems in an online fashion –\; as opposed to static planning beforehan d –\; involves two major mathematical challenges we deal with in this talk: creating algorithms which are run-time-efficient in order t o allow for a real-time implementation of the decisions as well as cop ing with the fact that the input data is not available all at once but is revealed over time in the form of a data stream. In order to allow for short computation times\, a thorough understanding of the underly ing structure of the solution space is key. Timetabling as well as res ource allocation problems can usually be reduced to clique problems in graphs with further side constraints\, which in turn creates connecti ons to the study of certain perfect graphs. We demonstrate first resul ts in this respect by characterizing two special cases of the clique p roblem with multiple-choice constraints which are solvable in polynomi al time\, investigating their polyhedral structure and graph-theoretic properties. The practical benefits of this research are demonstrated at the example of a railway timetabling problem to bring down traction energy consumption. In the second part of the talk\, we address onlin e decision making\, especially the question how to learn model compome ntes of optimization problems from observed data. Here\, we discuss th e recovery of objective functions from observed decisions. The goal is to learn a model that is able to take decisions which on average are as good as the observed ones with respect to some unknown true objecti ve function. We are able to present algorithms which DTSTART:20180626T143000Z DTEND:20180626T153000Z LOCATION:Seminarraum 01.255\, Cauerstr. 11\, 91058 Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Lehrerkolloquium: Funktionales Denken - von Sachaufgaben in Kl asse 5 bis zum Kalkül der Analysis UID:f56c73d7-b69e-41b4-b8df-e2150eeddf79 DESCRIPTION:Referent: Prof. Dr. Gerald Wittmann\, Pädagogische Hochsc hule Freiburg Veranstalter: Karel Tschacher DTSTART:20180703T143000Z DTEND:20180703T153000Z LOCATION:Hörsaal H13\, Cauerstr. 11\, 91058 Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Spectral Flow and Bifurcation UID:23888801-9d46-46b9-a39c-61911cc7bc39 DESCRIPTION:Referent: Prof. Nils Waterstraat\, University of Kent Vera nstalter: Hermann Schulz-Baldes Abstract: Bifurcation theory attempts to explain various phenomena that have been discovered and described i n the natural sciences over the centuries. Classical examples are\, e. g.\, the buckling of the Euler rod and the appearance of Taylor vortic es\, and often Hamiltonian systems play a central role. Mathematically speaking\, bifurcation theory is a field of nonlinear analysis that s tudies branches of solutions of equations of the type $F(lambda\,x)=0$ \, where $F:[0\,1]times Xrightarrow Y$ is a continuous map and $X\,Y$ are real Banach spaces. The aim of this talk is to show that concepts of global analysis\, like the spectral flow\, can be used to investiga te bifurcation phenomena. DTSTART:20181023T143000Z DTEND:20181023T153000Z LOCATION:Hörsaal 13\, Cauerstr. 11\, 91058 Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Testing reflected symmetry by means of the empirical Fourier t ransform. UID:e65b40ff-ecbe-4f67-abed-155535c2e9cd DESCRIPTION:Referent: Prof. Dr. Norbert Henze\, Karlsruhe Institut fü r Technologie Veranstalter: Wolfgang Stummer Abstract: The distributio n of a d-dimensional random vector X is said to be symmetric about a p oint a if X-a and a-X have the same distribution. This notion of refle cted symmetry is much weaker than spherical symmetry or elliptical sym metry. We discuss salient properties of a statistical test for the hyp othesis of reflected symmetry about an unknown center that employs the empirical Fourier transform. Although the testing problem is affine i nvariant\, this test is hitherto the only one that respects this prope rty. DTSTART:20181030T153000Z DTEND:20181030T163000Z LOCATION:Hörsaal H 13\, Cauerstr. 11\, 91058 Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Rechtwinklige Dreiecke in Schule und Hochschule UID:915a092d-5282-4f3b-ac02-f516fb9e4d55 DESCRIPTION:Referent: Prof. Dr. phil. Jürg Kramer\, Humboldt-Universi tät Berlin Veranstalter: Karel Tschacher Abstract: Rechtwinklige Drei ecke nehmen im Mathematikunterricht der Schule einen prominenten Platz ein: z.B. Dreieckskonstruktionen\, Satzgruppe des Pythagoras\, Einfü hrung der Winkelfunktionen. Rationalitätsfragen in diesem Kontext tre ten auch bereits auf\, z.B. beim Nachweis der Irrationalität der Quad ratwurzel aus 2. Weitere Rationalitätsfragen werden jedoch\, wenn üb erhaupt\, erst in der Hochschule behandelt. Über diesen interessanten Themenkomplex\, der bis zu Problemstellungen der aktuellen zahlentheo retischen Forschung führt\, soll in dem Vortrag berichtet werden. DTSTART:20181127T153000Z DTEND:20181127T163000Z LOCATION:Hörsaal H 13\, Cauerstr. 11\, 91058 Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Point Cloud Oversegmentation with Graph-Structured Deep Metric Learning UID:b774b3b1-825f-487e-b12d-03f7508cbf25 DESCRIPTION:Referent: Dr. Loic Landrieu\, Institut National de l’ \;Information Géographique et Forestière (IGN) Veranstalter: Martin Burger Abstract: We propose a new supervized learning framework for ov ersegmenting 3D point clouds into superpoints. We cast this problem as learning deep embeddings of the local geometry and radiometry of 3D p oints\, such that the border of objects presents high contrasts. The e mbeddings are computed using a lightweight neural network operating on the points‘\; local neighborhood. Finally\, we formulate superpo int oversegmentation as a graph-structured optimization problem with r espect to the learned embeddings. DTSTART:20181211T153000Z DTEND:20181211T163000Z LOCATION:Hörsaal H13\, Cauerstr. 11 DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:KK-theory in geometry\, number theory and physics UID:0814ff8f-ce84-4b0e-a0ea-0b80afb44623 DESCRIPTION:Referent: Dr. Bram Mesland\, Univ. Hannover Veranstalter: Hermann Schulz-Baldes DTSTART:20180206T153000Z DTEND:20180206T163000Z LOCATION:Hörsaal H13\, Cauerstr. 11 DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Mathematik im Beruf: From ENZ to zeb: Der Weg von der Reinen M athematik in die Unternehmensberatung UID:ae14d4cf-f934-415e-90e2-97eedaf46fbd DESCRIPTION:Referent: Dr. Hasan Gündogan\, ZEB Unternehmensberatung M ünster Veranstalter: Karl-Hermann Neeb Abstract: Unternehmensberatung en bieten für viele Absolventen einen spannenden Karriereeinstieg in die freie Wirtschaft. Während bei Betriebs- und Volkswirten mehr Wert auf praktische Erfahrungen und bei Wirtschaftsmathematikern auf metho disches Wissen gelegt wird\, werden an Reine Mathematiker typischerwei se andere Erwartungen geknüpft: Analysefähigkeit\, Strukturierungsve rmögen\, logische Stringenz und die vielgenannte Frustrationstoleranz sind dabei nur einige von vielen. Anhand von Beispielen wird berichte t\, wie sich der Einstieg und der Alltag als Managementberater gestalt et\, welche Eigenschaften eines Reinen Mathematikers dabei nützlich s ind und welche Fertigkeiten man sich abgewöhnen sollte. DTSTART:20180410T143000Z DTEND:20180410T153000Z LOCATION:Hörsaal H13\, Cauerstr. 11\, 91058 Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Valid and Consistent Adaptive Multiple Tests UID:1e5346a2-06b9-4f51-b1b8-3d2debb3e689 DESCRIPTION:Referent: Prof. Dr. Arnold Janssen\, Universität Düsseld orf Veranstalter: Wolfgang Stummer Abstract: Simultaneous hypotheses t esting for big data sets is a very difficult affair. The talk introduc es first the modern concept of multiple testing and examples are illus trated. Then new results are presented. The pioneer multiple test of B enjamini and Hochberg (1995) with up to date more than 42000 citations is a basic tool in high dimensional data analysis\, for instance in g enomics when a huge amount of tests are carried out simultaneously for the same data set. Their test and also improved data dependent adapti ve tests of Storey\, Taylor and Sigmund (2004) control the so called F DR\, see also Heesen and Janssen (2016) for more general adaptive proc edures. The FDR is the expectation of the ratio of the number of false rejections and all rejections. Although the FDR can be controlled by some given level alpha the false discovery proportion (FDP) may have s tochastic fluctuations. In this talk we discuss the consistency for ge neral adaptive multiple tests. We present finite sample and asymptotic results in order to bound deviations of the FDP from the present FDR level. References: [1] Benjamini and Hochberg (1995). Controlling the false discovery rate: a practical and powerful approach to multiple te sting. J. Roy. Statist. Soc. Ser. B 57(1)\, 289-300. [2] Heesen\, P. a nd Janssen\, A. (2016). Dynamic adaptive multiple tests with finite sa mple FDR control. J. Statist. Plann. Inference 168\, 38-51. [3] Storey \, J. D.\, Taylor\, J. E. and Siegmund\, D. (2004). Strong control\, c onservative point estimation and simultaneous conservative consistency of false discovery rates: a unified approach. J. R. Stat.Soc. Ser. B Stat. Methodol. 66(1)\, 187-205. DTSTART:20180515T143000Z DTEND:20180515T153000Z LOCATION:Hörsaal H13\, Cauerstr. 11\, 91058 Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Quarklet Frames in Adaptive Numerical Schemes UID:35824047-b62e-4054-a7e6-7303cfe9766b DESCRIPTION:Referent: Prof. Dr. Stephan Dahlke\, Universität Marburg Veranstalter: Cornelia Schneider DTSTART:20180522T143000Z DTEND:20180522T153000Z LOCATION:Hörsaal H13\, Cauerstr. 11\, 91058 Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Lagrangian Theory of Integrable Systems UID:eab6ca83-d382-4080-9a15-7f0fddcba75e DESCRIPTION:Referent: Prof. Dr. Yuri Suris\, TU Berlin Veranstalter: A ndreas Knauf Abstract: We will discuss the notion of a pluri-Lagrangia n structure\, which should be understood as an analog of integrability for variational systems. This is a development along the line of rese arch of discrete integrable Lagrangian systems initiated about a decad e ago\, however having its more remote roots in the theory of plurihar monic functions\, in the Z-invariant models of statistical mechanics a nd their quasiclassical limit\, as well as in the theory of variationa l symmetries going back to E. Noether. We will discuss main features o f pluri-Lagrangian systems in dimensions 1 and 2\, both continuous and discrete\, along with the relations of this novel structure to more s tandard notions of integrability. We will also consider some applicati ons of this structure\, including the classical billiards in quadrics and the problem of commutativity of multi-valued maps (correspondences ). DTSTART:20180529T143000Z DTEND:20180529T153000Z LOCATION:Hörsaal H13\, Cauerstr. 11\, 91058 Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Symmetry and Reflection Positivity UID:63fb72f5-0be2-4535-a66b-b07e35d04b01 DESCRIPTION:Referent: Prof. Dr. Rupert Frank\, LMU München Veranstalt er: Hermann Schulz-Baldes Abstract: There are many examples in mathema tics\, both pure and applied\, in which problems with symmetric formul ations have non-symmetric solutions. Sometimes this symmetry breaking is total\, as in the example of turbulence\, but often the symmetry br eaking is only partial. One technique that can sometimes be used to co nstrain the symmetry breaking is reflection positivity. It is a simple and useful concept that will be explained in the talk\, together with some examples. One of these concerns the minimum eigenvalues of the L aplace operator on a distorted hexagonal lattice. Another example that we will discuss is a functional inequality due to Onofri. DTSTART:20180605T143000Z DTEND:20180605T153000Z LOCATION:Hörsaal H13\, Cauerstr. 11\, 91058 Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Cardiovascular Modeling and Simulations. Applications to some Clinical Studies UID:c684ad15-7290-443e-93a5-578d6e09c2e7 DESCRIPTION:Referent: Prof. Dr. Adelia Sequeira\, IST Lissabon Veranst alter: Maria Neuss-Radu DTSTART:20180612T143000Z DTEND:20180612T153000Z LOCATION:Hörsaal H13\, Cauerstr. 11\, 91058 Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Homogenization beyond Periodicity and Scale Separation UID:cf7304f8-5eed-4447-80ba-b31dda83f824 DESCRIPTION:Referent: Prof. Dr. Daniel Peterseim\, Universität Augsbu rg Veranstalter: Nicolas Neuss Abstract: Physical processes in micro-h eterogeneous media can often be modeled by partial differential equati ons (PDEs) with oscillatory coefficients that represent complex materi al microstructures. Given the multiscale nature of these processes\, t he construction of computable macroscopic (homogenized or effective) m odels is crucial for the efficient and reliable numerical simulation i n this context. Numerical homogenization is a multiscale method for th e derivation and simulation of such macroscopic models. At the example of a prototypical linear elliptic model diffusion problem\, this talk illustrates such an approach. It is based on the computation of opera tor-dependent subspaces with a quasi-local basis and approximation pro perties independent of oscillations and roughness of the diffusion coe fficient. While constructive approaches in the mathematical theory of homogenization require strong structural assumptions such as (local) p eriodicity and scale separation of the coefficients\, the new subspace decomposition approach to homogenization is applicable\, reliable and accurate beyond these restrictions. This added value of the approach is demonstrated by theoretical and experimental results. DTSTART:20180619T143000Z DTEND:20180619T153000Z LOCATION:Hörsaal H13\, Cauerstr. 11\, 91058 Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Mathematical Modelling of the Spatial Structure and Regulation of Antiviral Immune Responses UID:852ac222-4ffa-4df7-b87c-e1b2e8e9669e DESCRIPTION:Referent: Prof. Dr. Gennady Bocharov\, Russian Academy of Sciences Moskow Veranstalter: Maria Neuss-Radu DTSTART:20170711T143000Z DTEND:20170711T153000Z LOCATION:HS13\, Cauerstr. 11 DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Geometry and Analysis on Locally Symmetric Spaces with Indefin ite Metric - after 145 years of Klein's Erlangen Program UID:4dde6180-a649-46e4-b5e7-0deaccfb864c DESCRIPTION:Referent: Prof. Dr. Toshiyuki Kobayashi\, Univ. of Tokyo V eranstalter: Jan Möllers DTSTART:20170725T143000Z DTEND:20170725T153000Z LOCATION:HS13\, Cauerstr. 11 DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:An introduction to the Lasserre hierarchy in polynomial optimi zation UID:72a67458-fa9a-4bcc-bd8c-27c2e6031d76 DESCRIPTION:Referent: Prof. Dr. Didier Henrion\, LAAS-CNRS\, Toulouse Veranstalter: Michael Stingl DTSTART:20171128T153000Z DTEND:20171128T163000Z LOCATION:Hörsaal H13\, Cauerstr. 11 DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Lehrerkolloquium: Einundzwanzig\, Zwanzig eins\, Zweizehn eins : Konsistente Konstruktionen der Zahlwörter im Deutschen UID:465ff90d-9ae8-4190-a683-405da6416c57 DESCRIPTION:Referent: Prof. Dr. Wolfram Meyerhöfer\, Univ. Paderborn Veranstalter: Karel Tschacher DTSTART:20171205T153000Z DTEND:20171205T163000Z LOCATION:Hörsaal H13\, Cauerstr. 11 DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Quantum Field Theory without Fields UID:6aa5bb7f-2e9b-4a57-9e95-cef28d34ee56 DESCRIPTION:Referent: Dr. Christian Jäkel\, Univ. of Sao Paulo Verans talter: Karl-Hermann Neeb DTSTART:20171219T153000Z DTEND:20171219T163000Z LOCATION:Hörsaal H13\, Cauerstr. 11 DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Habilitationsvorstellungsvortrag UID:5f2b0bbb-60ad-47e6-9083-87619396c908 DESCRIPTION:Referent: Dr. Florian Frank Veranstalter: Peter Knabner DTSTART:20180109T153000Z DTEND:20180109T163000Z LOCATION:Hörsaal H13\, Cauerstr. 11 DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Scattering Theory for Markov Processes an Interplay between Cl assical and Quantum Probability UID:6f58e48b-b60f-4a22-9703-8be7bdd6485f DESCRIPTION:Referent: Herr Prof. Dr. Burkhard Kümmerer\, TU Darmstadt Veranstalter: Karl-Hermann Neeb DTSTART:20180116T153000Z DTEND:20180116T163000Z LOCATION:Hörsaal H13\, Cauerstr. 11\, 91058 Erlangen DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:The 1D Anderson Model: From Fürstenberg's Theorem to Spectral and Dynamical Localization via Large Deviation Estimates UID:e960dd13-90ce-4dac-a23e-27bf531d6715 DESCRIPTION:Referent: Prof. Dr. David Damanik\, Rice Univ.\, Houston V eranstalter: Hermann Schulz-Baldes DTSTART:20180123T153000Z DTEND:20180123T163000Z LOCATION:Hörsaal H13\, Cauerstr. 11 DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Spectral Geometry of Singular Spaces UID:efeca8df-4fb1-46f8-9806-69ebade6f903 DESCRIPTION:Referent: Prof. Dr. Matthias Lesch\, Univ. Bonn Veranstalt er: Hermann Schulz-Baldes DTSTART:20180130T153000Z DTEND:20180130T163000Z LOCATION:Hörsaal H13\, Cauerstr. 11 DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Optimal Control of Multiphase Fluids and Droplets UID:c4304719-f64f-4deb-9041-a1ba560c3890 DESCRIPTION:Referent: Prof. Dr. M. Hintermüller\, HU-Berlin und Direk tor des WIAS\, Berlin Veranstalter: K.-H. Neeb DTSTART:20170502T143000Z DTEND:20170502T153000Z LOCATION:Hörsaal H13\, Cauerstr. 11 DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Habilitationsvorstellungsvortrag: Ahnenlinien in lokal regulie rten Populationsmodellen UID:196c50f2-0f64-46e0-b47a-d53627f1db92 DESCRIPTION:Referent: Dr. Andrej Depperschmidt\, FAU Erlangen Veransta lter: Andreas Greven DTSTART:20170509T143000Z DTEND:20170509T153000Z LOCATION:Hörsaal 13\, Cauerstr. 11 DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Causal Fermion Systems and Quantum Field Theory UID:cd85776e-455b-46d9-b97f-ff97f8707aad DESCRIPTION:Referent: Prof. Dr. Felix Finster\, Univ. Regensburg Veran stalter: Karl-Hermann Neeb DTSTART:20170523T143000Z DTEND:20170523T153000Z LOCATION:HS13\, Cauerstr. 11 DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Polymatroid Optimization and Equilibrium Computation UID:bbe306f0-eeef-457f-b170-6a161c1ef0c1 DESCRIPTION:Referent: Prof. Dr. Tobias Harks\, Univ. Augsburg Veransta lter: Alexander Martin DTSTART:20170530T143000Z DTEND:20170530T153000Z LOCATION:HS13\, Cauerstr. 11 DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Valuing Equity-Linked Death Benefits in Jump-Diffusion Models UID:5a2c5d4f-2f49-47df-a359-c1c08020cf0d DESCRIPTION:Referent: Prof. Dr. Elias S. W. Shiu\, Univ. of Iwoa Veran stalter: Wolfgang Stummer\, Gemeinsames Kolloquium der Departments Mat hematik und Wirtschaftswissenschaften DTSTART:20170530T144500Z DTEND:20170530T154500Z LOCATION:Raum LG 4.154\, Lange Gasse 20\, 90403 Nürnberg DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Mathematical Optimization for Extremal Discrete Geometry UID:9912d4d3-eb5f-4105-bcf4-ce83ad289f92 DESCRIPTION:Referent: Prof. Dr. Frank Vallentin\, Univ. Köln Veransta lter: Lars Schewe\, LSt Wirtschaftsmathematik DTSTART:20170613T143000Z DTEND:20170613T153000Z LOCATION:HS13\, Cauerstr. 11 DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Shape Differentiation: New Perspectives UID:0cb871fa-aabc-461e-b38e-b6d37f080300 DESCRIPTION:Referent: Prof. Dr. Ralf Hiptmair\, ETH Zürich Veranstalt er: Eberhard Bänsch DTSTART:20170620T143000Z DTEND:20170620T153000Z LOCATION:HS13\, Cauerstr. 11 DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Braids\, Associators\, and Quantization of Moduli Spaces UID:73663dc7-bd44-4740-b91d-182173731d87 DESCRIPTION:Referent: Dr. Pavol Severa\, Univ. Genf Veranstalter: Cath erine Meusburger DTSTART:20170627T143000Z DTEND:20170627T153000Z LOCATION:HS13\, Cauerstr. 11 DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Lehrerkolloquium: Mathematik ist schwer. Wie löse ich Aufgabe n der Fürther Mathematik Olympiade FÜMO? UID:6803d10a-3855-41ee-bb77-dc868b75a2d3 DESCRIPTION:Referent: Oberstudienrat Paul Jainta\, Adam Kraft-Gymnasiu m Schwabach Veranstalter: Karel Tschacher DTSTART:20170704T143000Z DTEND:20170704T153000Z LOCATION:Hörsaal 13\, Cauerstr. 11 DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:From tensor representations of sl(infty) to universal ordered tensor categories UID:d88e5dd7-066b-4dc4-929f-32d6a58aa7ac DESCRIPTION:Referent: Prof. Dr. Ivan Penkov (Jacobs Univ. Bremen) Vera nstalter: Peter Fiebig DTSTART:20161025T143000Z DTEND:20161025T153000Z LOCATION:H13\, Cauerstr. 11 DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Matrices that almost commute\, their invariants and applications UID:9e99e9df-64fa-4aa6-bfbb-1783d629d1cf DESCRIPTION:Referent: Prof. Dr. Terry Loring (Univ. New Mexiko) Verans talter: Hermann Schulz-Baldes Abstract: Almost commuting Hermitian mat rices\, and approximately compatible observables\, have been confoundi ng mathematicians and physicists since the work of von Neumann. Operat or algebraists tend to measure the commutators of Hermitian matrices i n in the spectral norm and ask for approximation by commuting Hermitia n matrices with the perturbation controlled in the spectral norm\, uni formly for all matrix sizes. Can this be done? The answer depends both on the number of matrices and the scalar field. For complex matrices this can be done for d=2 but not for d=3. For real matrices\, this can be done for d=2 but not for d=5. This talk will discuss how K-theory enters the picture\, and the status of this problem for three or four real matrices. The connection to topological phases of matter will be discussed but not emphasized. DTSTART:20161108T153000Z DTEND:20161108T163000Z LOCATION:Hörsaal H13\, Cauerstr. 11 DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Representations of *-algebras on Hilbert modules: C*-hulls\, l ocal-global principles\, and an induction theorem UID:2102ed7c-2569-4f9f-a2e6-89ff3c752396 DESCRIPTION:Referent: Prof. Dr. Ralf Meyer (Univ. Göttingen) Veransta lter: K.-H. Neeb DTSTART:20161115T153000Z DTEND:20161115T163000Z LOCATION:Hörsaal H13\, Cauerstr. 11 DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Stochastic analysis and geometric functional inequalities UID:e4835783-0e13-49bf-9bc6-2bcf6965a928 DESCRIPTION:Referent: Prof. Dr. Maria Gordina (Univ. of Connecticut\, Storrs) Veranstalter: K.-H. Neeb DTSTART:20161122T153000Z DTEND:20161122T163000Z LOCATION:Hörsaal H13\, Cauerstr. 11 DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Lehrerkolloquium: Flexibel differenzieren im gymnasialen Mathe matikunterricht UID:47aec735-ff45-4c21-ac6b-06779211dd5c DESCRIPTION:Referent: Prof. Dr. Susanne Prediger (Univ. Dortmund) Vera nstalter: Karel Tschacher DTSTART:20161129T153000Z DTEND:20161129T163000Z LOCATION:Hörsaal H13\, Cauerstr. 11 DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Keine Angst vor der 1001. Ableitung UID:39ba9860-4de2-4007-a832-b40d46e20946 DESCRIPTION:Referent: Prof. Dr. Folkmar Bornemann (TU München) Verans talter: E. Bänsch\, N. Neuss Abstract: Numerische Differentiation ste ht im Ruf\, instabil zu sein und für die Berechnung höherer Ableitun gen nicht zu taugen. Dabei denkt man meist an reelle Formeln und über sieht\, dass sich höhere Ableitungen analytischer Funktionen als Kurv enintegrale in der komplexen Ebene\, etwa über Kreislinien\, ausdrüc ken lassen. Dieser Zugang sieht theoretisch zunächst perfekt aus\, is t jedoch praktisch auch nicht ohne Tücken: Zwar sind alle zulässigen Radien analytisch gleichberechtigt\, das Ausmaß an Auslöschung im I ntegral hängt aber dramatisch von der richtigen Wahl des Radius ab\; tatsächlich ist grundsätzlich ein Radius besonders ausgezeichnet und führt\, für große Klassen von Funktionen\, zur optimalen numerisch en Stabilität auch bei sehr hohen Ableitungsordnungen. Wir wollen die sen bislang nur experimentell beobachteten Effekt verstehen. Dabei beg egnen wir einigen klassischen Konzepten und Sätzen der Funktionentheo rie und der Theorie ganzer Funktionen von Hadamard bis Lewin und gelan gen schließlich zu Formeln für die Berechnung des optimalen Radius. Eine konkrete Anwendung in der multivariaten Statistik verdeutlicht\, dass die Fragestellung nicht nur von methodischem Interesse ist. DTSTART:20161206T153000Z DTEND:20161206T163000Z LOCATION:Hörsaal H13\, Cauerstr. 11 DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Covariant differential operators\, past and present UID:7ca475dc-d071-4e65-8191-4f9639addc1e DESCRIPTION:Referent: Prof. Dr. Jean-Louis Clerc (Univ. Nancy) Veranst alter: Jan Moellers DTSTART:20161213T153000Z DTEND:20161213T163000Z LOCATION:Hörsaal H13\, Cauerstr. 11 DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:The notion of positivity in contact geometry UID:00f5d00b-a72c-4645-a0dd-2d6bdb59f555 DESCRIPTION:Referent: Prof. Dr. Peter Albers\, Universität Münster V eranstalter: Andreas Knauf DTSTART:20170117T153000Z DTEND:20170117T163000Z LOCATION:Hörsaal H13\, Cauerstr. 11 DTSTAMP:20260819T224245Z END:VEVENT BEGIN:VEVENT SUMMARY:Habilitationsvorstellungsvortrag: Herr Dr. Raphael Schulz UID:5cdf9354-be48-4e1a-84c2-c5b4e607cf52 DESCRIPTION:Referent: Dr. Raphael Schulz (FAU) Veranstalter: Peter Kna bner Abstract: The talk is concerned with the growth of biofilms produ ced by (chemotactical) bacteria within a saturated porous media. The i ncrease of a biomass on the surface of the solid matrix changes the po rosity and impede the flow through the pores. By formal periodic homog enization we derive an averaged model describing the process via Darcy ’\;s law and upscaled transport equations with effective coeffici ents given by the evolving microstructure at the pore-scale. Based on the assumption of a uniform evolution of the underlying pore geometry and slight self-diffusivity of the bacteria\, solvability in a weak se nse either global in time or up to a possible clogging phenomenon is s hown. Furthermore\, by assuming sufficient regularity on the data we p rove boundedness of the solution. DTSTART:20161018T143000Z DTEND:20161018T153000Z LOCATION:Hörsaal 13\, Cauerstr. 11 DTSTAMP:20260819T224245Z END:VEVENT END:VCALENDAR