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X-ORIGINAL-URL:https://crc326gaus.de
X-WR-CALDESC:Events for CRC 326 - GAUS
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DTSTART;TZID=Europe/Berlin:20260416T090000
DTEND;TZID=Europe/Berlin:20260416T110000
DTSTAMP:20260416T094230
CREATED:20260407T111339Z
LAST-MODIFIED:20260407T111339Z
UID:12996-1776330000-1776337200@crc326gaus.de
SUMMARY:Poincaré-Dualität in Charakteristik p
DESCRIPTION:Vortrag 1: Einführung – Immanuel Klevesath (Universität Heidelberg)
URL:https://crc326gaus.de/event/poincare-dualitat-in-charakteristik-p/
LOCATION:Heidelberg\, Mathematikon\, SR 8\, Heidelberg\, Germany
CATEGORIES:GAUS-AG
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20260416T111500
DTEND;TZID=Europe/Berlin:20260416T124500
DTSTAMP:20260416T094230
CREATED:20260318T123713Z
LAST-MODIFIED:20260318T123753Z
UID:12848-1776338100-1776343500@crc326gaus.de
SUMMARY:The K-theory of Z/p^n
DESCRIPTION:Talk 1: Introduction\, background of K-theory and reduction steps – Marlon Kocher (Universität Heidelberg)
URL:https://crc326gaus.de/event/the-k-theory-of-z-pn/
LOCATION:Heidelberg\, Mathematikon\, SR 8 and Zoom\, INF 205\, Heidelberg\, Germany
CATEGORIES:GAUS-AG
ORGANIZER;CN="Marlon Kocher":MAILTO:mkocher@mathi.uni-heidelberg.de
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BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20260416T140000
DTEND;TZID=Europe/Berlin:20260416T160000
DTSTAMP:20260416T094230
CREATED:20260410T084700Z
LAST-MODIFIED:20260415T062531Z
UID:13044-1776348000-1776355200@crc326gaus.de
SUMMARY:AGTZ-Kolloquium
DESCRIPTION:Dominik Kirstein (JGU Mainz) \nThe signature as a map of cobordism categories \nAbstract: The signature is a classical invariant of manifolds\, which is a shadow of their intersection form. More refined topological indices of manifolds can be constructed by remembering the full intersection form.\nIn this talk\, I will explain how the signature has an enhancement to a multiplicative map from geometric cobordism spectra of manifolds to algebraic cobordism spectra of Hermitian forms (known as Grothendieck-Witt or L-theory). This crucially depends on the construction of the signature on the level of cobordism categories. This approach generalises and unifies various existing constructions in the literature. I will conclude by explaining some interesting applications to geometric topology\, such as a simple proof of the Weiss-Williams index theorem on characteristic classes of manifold bundles. Based on work in progress with Andrea Bianchi\, Fabian Hebestreit\, Kaif Hilman\, Christian Kremer\, Markus Land\, Thomas Nikolaus and Wolfgang Steimle.
URL:https://crc326gaus.de/event/agtz-kolloquium/
LOCATION:Mainz\, Hilbertraum (05-432)
CATEGORIES:GAUS-AG
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20260416T161500
DTEND;TZID=Europe/Berlin:20260416T180000
DTSTAMP:20260416T094230
CREATED:20260413T115753Z
LAST-MODIFIED:20260413T115753Z
UID:13052-1776356100-1776362400@crc326gaus.de
SUMMARY:Oberseminar Algebra und Geometrie
DESCRIPTION:Valeria Bertini (Universita degli Studi di Milano) : Quotients of Hyperkähler manifolds \n\nAbstract: Hyperkähler manifolds have been intensively studied from the 80s on\, being building blocks of compact Kähler manifolds with trivial first Chern class; despite their natural role\, finding examples of Hyperkähler manifolds is well known to be extremely challenging. In recent years\, the focus has turned on their singular analogue\, appearing naturally from the birational geometry perspective\, and finally giving many new families of examples. A successful technique to produce singular examples is to consider (terminalizations of) quotients of smooth Hyperkähler manifolds. In this talk I will start presenting some recent results on singular Hyperkähler varieties constructed as quotients\, and then I will turn to the case the quotient is a Calabi-Yau variety. The first part is a joint work with Grossi\, Mauri and Mazzon\, and the second one is work in progress with Garbagnati.
URL:https://crc326gaus.de/event/oberseminar-algebra-und-geometrie-7/
LOCATION:Frankfurt\, Robert-Mayer-Str. 6-8\, Raum 309
CATEGORIES:GAUS-Seminar
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