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SUMMARY:Computing cohomology of differentiable stacks [MPIM]
DTSTART:20260630T090000Z
DTEND:20260630T103000Z
DTSTAMP:20260702T051600Z
UID:indico-event-1435@math-events.uni-bonn.de
DESCRIPTION:Speakers: Annika Kraasch-Tarnowsky (MPIM)\n\nAbstract homotopy
  theory seminar\nThe notion of a differentiable stack in geometry can be u
 sed to study objects such as orbifolds\, moduli spaces or classifying spac
 es\, which despite not being manifolds carry similar differential geometri
 c information. Examples in particular include quotients of manifolds by a 
 Lie group action. These objects are closely related to equivariant cohomol
 ogy\, a cohomology theory on such manifolds with group actions that has ma
 ny applications in different areas of mathematics and physics. It can be s
 een as a special case of the cohomology of differentiable stacks. The main
  tool for computing equivariant cohomology\, the Cartan model\, has no equ
 ivalent in the full generality\, but there have been recent advances on si
 milar constructions.\n\nhttps://math-events.uni-bonn.de/event/1435/
LOCATION:MPIM\, Vivatsgasse\,  7 - Seminar Room (Max Planck Institute for 
 Mathematics)
URL:https://math-events.uni-bonn.de/event/1435/
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