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SUMMARY:Cohomology of symmetric stacks [Oberseminar Darstellungstheorie]
DTSTART:20251121T131500Z
DTEND:20251121T141500Z
DTSTAMP:20260308T040600Z
UID:indico-event-822@math-events.uni-bonn.de
DESCRIPTION:Speakers: Tudor Padurariu (University fo Bonn)\n\nI will talk 
 about a joint project with Chenjing Bu\, Ben Davison\,Andrés Ibáñez Nú
 ñez\, and Tasuki Kinjo.We define BPS cohomology for a large class of stac
 ks\, which is a finitedimensional graded Q-vector space\, and decompose th
 e cohomology of thestack in terms of BPS cohomologies of associated stacks
 .I will discuss an application to the structure of cohomological Hallalgeb
 ras introduced by Kontsevich-Soibelman. We reprove the cohomologicalintegr
 ality theorem of Davison-Meinhardt for quivers with potential\, andwe prov
 e a version of it for moduli of objects in more general Calabi-Yau3-catego
 ries\, including for coherent sheaves on Calabi-Yau 3-folds withorientatio
 n.\n\nhttps://math-events.uni-bonn.de/event/822/
LOCATION:Endenicher Allee 60/1.008 - Seminarraum (Mathezentrum)
URL:https://math-events.uni-bonn.de/event/822/
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