SMS scnews item created by Catherine Meister at Wed 30 Jul 2025 1120
Type: Seminar
Distribution: World
Expiry: 13 Aug 2025
Calendar1: 31 Jul 2025 1300-1400
CalLoc1: SMRI Seminar Room (Macleay A12 Room 301)
CalTitle1: Dedekind's lemma, Galois connections and pseudoreflection groups
Auth: cmeister@w95s10l3.shared.sydney.edu.au (cmei0631) in SMS-SAML

Seminar: Dyer

Dedekind's lemma, Galois connections and pseudoreflection groups



Speaker: Matthew Dyer, University of Notre Dame

Abstract: The first part of this talk will discuss generalizations of Dedekind's lemma on linear independence of characters. The second part will be concerned with generalities on Galois connections which underlie many interesting applications of results in the first part. As an illustrative application, the final part will describe a distinguished role for "pseudoreflection groups" amongst all groups acting faithfully and linearly on vector spaces.

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