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X-WR-CALDESC:Events for CRC 326 - GAUS
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BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20220601T160000
DTEND;TZID=Europe/Berlin:20220601T170000
DTSTAMP:20260601T024232
CREATED:20220411T073933Z
LAST-MODIFIED:20220530T130617Z
UID:2542-1654099200-1654102800@crc326gaus.de
SUMMARY:Invariant rings of reductive representations and singularities of the Minimal Model Program
DESCRIPTION:Oberseminar Algebra und Geometrie \nDaniel Greb (Univ. Duisburg-Essen) \nAbstract:\nI will discuss my recent work with Braun\, Langlois\, and Moraga showing that invariant rings of finite-dimensional representations of (linearly) reductive groups over an algebraically closed field of characteristic zero have Kawamata log-terminal (klt) singularities. I will spend most of the time on explaining what klt singularities are\, why the klt condition is a very natural and geometric condition\, and why smaller classes of singularities are not sufficient in order to understand arbitrary reductive quotient singularities. Then\, I will discuss some applications of the main result\, e.g. to varieties important in geometric representation theory and to certain moduli spaces. If time permits\, I will discuss some ideas of the proof.
URL:https://crc326gaus.de/event/daniel-greb/
LOCATION:Frankfurt\, Robert-Mayer-Str. 10\, Raum 711 groß
CATEGORIES:GAUS-Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20220603T133000
DTEND;TZID=Europe/Berlin:20220603T150000
DTSTAMP:20260601T024232
CREATED:20220524T131617Z
LAST-MODIFIED:20220524T131617Z
UID:3069-1654263000-1654268400@crc326gaus.de
SUMMARY:On the cohomology of the Drinfeld tower
DESCRIPTION:Dr. Gabriel Dospinescu\, Ecole Normale Supérieure de Lyon
URL:https://crc326gaus.de/event/on-the-cohomology-of-the-drinfeld-tower/
LOCATION:Heidelberg\, Mathematikon\, SR A and Livestream
CATEGORIES:GAUS-Seminar
ORGANIZER;CN="Rustam Steingart":MAILTO:rsteingart@mathi.uni-heidelberg.de
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20220609T140000
DTEND;TZID=Europe/Berlin:20220609T160000
DTSTAMP:20260601T024232
CREATED:20220518T112552Z
LAST-MODIFIED:20220620T073936Z
UID:3060-1654783200-1654790400@crc326gaus.de
SUMMARY:The wild ramification locus
DESCRIPTION:
URL:https://crc326gaus.de/event/t-b-a/
LOCATION:Mainz\, Hilbertraum (05-432) and Zoom
CATEGORIES:GAUS-Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20220610T133000
DTEND;TZID=Europe/Berlin:20220610T150000
DTSTAMP:20260601T024232
CREATED:20220603T120910Z
LAST-MODIFIED:20220603T120910Z
UID:3097-1654867800-1654873200@crc326gaus.de
SUMMARY:Main conjectures and p-adic Stark conjectures for Artin motives
DESCRIPTION:Dr. Alexandre Maksoud\, Université du Luxembourg
URL:https://crc326gaus.de/event/main-conjectures-and-p-adic-stark-conjectures-for-artin-motives/
LOCATION:Heidelberg\, Mathematikon\, SR A and Livestream
CATEGORIES:GAUS-Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20220610T150000
DTEND;TZID=Europe/Berlin:20220610T160000
DTSTAMP:20260601T024232
CREATED:20220530T073537Z
LAST-MODIFIED:20220601T070145Z
UID:3072-1654873200-1654876800@crc326gaus.de
SUMMARY:Brill-Noether Theory over the Hurwitz Space
DESCRIPTION:TGiZ-Seminar: Tropical geometry in Zoom (Second meeting Summer Semester 2022) \nDave Jensen (University of Kentucky) \nAbstract:\nBrill-Noether theory is the study of line bundles on algebraic curves. A series of results in the 80’s describe the varieties parameterizing line bundles with given invariants on a sufficiently general curve. More recently\, several mathematicians have turned their attention to the Brill-Noether theory of general covers — that is\, curves that are general in the Hurwitz space rather than in the moduli space of curves. We will survey these recent results and\, time permitting\, some generalizations.
URL:https://crc326gaus.de/event/brill-noether-theory-over-the-hurwitz-space/
LOCATION:Frankfurt and Zoom
CATEGORIES:GAUS-Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20220610T161500
DTEND;TZID=Europe/Berlin:20220610T171500
DTSTAMP:20260601T024232
CREATED:20220530T073812Z
LAST-MODIFIED:20220601T070242Z
UID:3074-1654877700-1654881300@crc326gaus.de
SUMMARY:The combinatorics of the Brill-Noether Theory of general covers
DESCRIPTION:TGiZ-Seminar: Tropical geometry in Zoom (Second meeting Summer Semester 2022) \nKaelin Cook-Powell (Emory University) \nAbstract:\nThe study of line bundles on algebraic curves has historically had deep connections with combinatorics. For example\, standard young tableaux have been used to study line bundles of sufficiently general curves. Recently a variation of tableaux\, known as k-uniform displacement tableaux\, have been used to study line bundles of general covers — that is curves general in the Hurwitz space. We will discuss how these displacement tableaux relate to line bundles of general covers and examine how they are used to produce new results in Brill-Noether Theory.
URL:https://crc326gaus.de/event/the-combinatorics-of-the-brill-noether-theory-of-general-covers/
LOCATION:Frankfurt and Zoom
CATEGORIES:GAUS-Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20220615T160000
DTEND;TZID=Europe/Berlin:20220615T170000
DTSTAMP:20260601T024232
CREATED:20220414T080523Z
LAST-MODIFIED:20220623T090714Z
UID:2700-1655308800-1655312400@crc326gaus.de
SUMMARY:Gorenstein 3-Fanos von Picardzahl 1 mit einer 2-Torus Wirkung;  Gorenstein Fano 3-folds of Picard number 1 with a 2-torus action
DESCRIPTION:Oberseminar Algebra und Geometrie \nAndreas Bäuerle (Univ. Tübingen) \nAbstract: Wir klassifizieren die dreidimensionalen\, nichttorischen\, Q-faktoriellen\, log terminalen\, Gorenstein Fano Varietäten von Picardzahl eins\, die eine effektive Wirkung eines zweidimensionalen Torus besitzen. \nWe classify the non-toric\, Q-factorial\, log terminal\, Gorenstein Fano threefolds of Picard number one that admit an effective action of a two-dimensional torus. \n  \n  \n  \n  \n 
URL:https://crc326gaus.de/event/tba-4/
LOCATION:Frankfurt\, Robert-Mayer-Str. 10\, Raum 711 groß
CATEGORIES:GAUS-Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20220624T133000
DTEND;TZID=Europe/Berlin:20220624T150000
DTSTAMP:20260601T024232
CREATED:20220617T113551Z
LAST-MODIFIED:20220617T113642Z
UID:3145-1656077400-1656082800@crc326gaus.de
SUMMARY:On geometric linear and quadratic Chabauty
DESCRIPTION:Pim Spelier (Universiteit Leiden)
URL:https://crc326gaus.de/event/on-geometric-linear-and-quadratic-chabauty/
LOCATION:Heidelberg\, Mathematikon\, SR A and Livestream
CATEGORIES:GAUS-Seminar
ORGANIZER;CN="Marius Leonhardt":MAILTO:mleonhardt@mathi.uni-heidelberg.de
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20220629T160000
DTEND;TZID=Europe/Berlin:20220629T170000
DTSTAMP:20260601T024232
CREATED:20220509T111933Z
LAST-MODIFIED:20220613T085145Z
UID:2943-1656518400-1656522000@crc326gaus.de
SUMMARY:What is a building and why should one care?
DESCRIPTION:Oberseminar Algebra und Geometrie \nPetra Schwer (Otto-von-Guericke-Universität Magdeburg) \nAbstract:\nGroups like GL_n\, SL_n or SP_n  play an important role in many areas of mathematics. It has been known for a long time that some of their properties (when studied over the reals or complex numbers) are best understood via the associated symmetric spaces. Jaques Tits later introduced buildings as a tool to study the respective groups over other field and developed\, together with Bruhat\, a theory that also captures reductive groups evaluated over non-archimedian local fields with discrete valuations\, like the p-adic numbers. \nIn this talk I will explain how some of the subgroup structures of such a reductive group over a non-Archimedian local field can be explained via Coxeter combinatorics and the geometry of an (affine) Bruhat-Tits building\, its apartments and retractions. The building for example simultaneously encodes the (affine) flag variety and (affine) Grassmannian associated to the group. But it also permits to explain more complicated structures such as representation theoretic data or other associated varieties in purely combinatorial terms.
URL:https://crc326gaus.de/event/tba-6/
LOCATION:Frankfurt\, Robert-Mayer-Str. 10\, Raum 711 groß
CATEGORIES:GAUS-Seminar
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