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SUMMARY:Daniel Berwick-Evans (University of Illinois Urbana-Champaign)
DTSTART:20231128T190000Z
DTEND:20231128T205000Z
DTSTAMP:20260422T174128Z
UID:tandg/14
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/tandg/14/">T
 wisted equivariant Thom classes in topology and physics</a>\nby Daniel Ber
 wick-Evans (University of Illinois Urbana-Champaign) as part of Topology a
 nd Geometry Seminar (Texas\, Kansas)\n\n\nAbstract\nIn their seminal work\
 , Mathai and Quillen explained how free fermion theories can be used to co
 nstruct cocycle representatives of Thom classes in de Rham cohomology. Aft
 er reviewing this idea\, I will describe several avenues of generalization
  that lead to cocycle representatives of Thom classes in twisted equivaria
 nt KR-theory and (conjecturally) in equivariant elliptic cohomology. I wil
 l further describe nice properties enjoyed by these cocycle representative
 s\, e.g.\, compatibility with (twisted) power operations. This is joint wo
 rk with combinations of Tobi Barthel\, Millie Deaton\, Meng Guo\, Yigal Ka
 mel\, Hui Langwen\, Kiran Luecke\, Alex Pacun\, and Nat Stapleton.\n
LOCATION:https://researchseminars.org/talk/tandg/14/
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