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SUMMARY:sl(n) link homology via Bott-Samelson spaces [Oberseminar Darstell
 ungstheorie]
DTSTART:20260612T121500Z
DTEND:20260612T131500Z
DTSTAMP:20260716T192300Z
UID:indico-event-1300@math-events.uni-bonn.de
DESCRIPTION:Speakers: Tomas Mejía Gomez (Ruhr Universität Bochum)\n\nBot
 t-Samelson spaces are spaces with an action of a torus\, such that their e
 quivariant cohomology recovers Soergel bimodules and their Hochschild homo
 logy. These spaces\, originally appearing as resolutions of Schubert varie
 ties\, have been used in several ways to give geometric constructions of K
 hovanov-Rozansky HOMFLY-PT link homology. They are also the starting point
  for generalizations of Soergel bimodules to other cohomology theories suc
 h as K-theory. In this talk\, I will explore some implications of this tor
 us-equivariant perspective. In particular\, I will show how to obtain (Dun
 field-Gukov-Rasmussen) differentials for integral sl(n) link homology as t
 opologically defined classes in equivariant cohomology of Bott-Samelson sp
 aces\, with close ties to the equivariant Schubert calculus of the flag ma
 nifold.\n\nhttps://math-events.uni-bonn.de/event/1300/
LOCATION:MPIM\, Vivatsgasse\,  7 - Lecture Hall (Max Planck Institute for 
 Mathematics)
URL:https://math-events.uni-bonn.de/event/1300/
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