Dear Colleagues and Students,
You are cordially invited to the Topology Seminar organized by the Department of Mathematics.
Speaker: Cihan Bahran (University of Minnesota)
“Categorifying induction formulae via divergent series”
Abstract: We show how to get explicit induction formulae for finite group representations (and more generally for rational Green functors) by summing a divergent series over Dwyer’s subgroup and centralizer decomposition spaces. This results in formulae with rational coefficients. The former space yields a well-known induction formula, the latter yields a new one. As essentially immediate corollaries of the existing literature, we get similar formulae in group cohomology and stable splittings of classifying spaces.
Date: Monday, April 15, 2019
Place: Mathematics Seminar Room, SA – 141