MATH Seminar: “Categorifying Induction Formulae via Divergent Series,” Cihan Bahran (University of Minnesota), SA-141, 1:40PM April 15 (EN)

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
Time: 13:40
Place: Mathematics Seminar Room, SA – 141