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The S_n action on the homology groups of M_{0,n}-bar

February 18 at 16:3017:30 CET

TGiZ-Seminar: Tropical geometry in Zoom (Second meeting)

Rohini Ramadas (University of Warwick)

Abstract:
The symmetric group on n letters acts on M_{0,n}-bar, and thus on its (co-)homology groups. The induced actions on (co-)homology have been studied by, eg., Getzler, Bergstrom-Minabe, Castravet-Tevelev. We ask: does H_{2k}(M_{0,n}-bar) admit an equivariant basis, i.e. one that is permuted by S_n? We describe progress towards answering this question. This talk includes joint work with Rob Silversmith.

Details

Date:
February 18
Time:
16:30 – 17:30 CET
Website:
https://www.uni-frankfurt.de/76756909/TGiF_Tropical_Geometry_in_Frankfurt

Venue

Frankfurt and Zoom

Organizer

Martin Ulirsch