On the brauer indecomposability of scott modules

R. Kessar, S. Koshitani, M. Linckelmann

Research output: Contribution to journalArticlepeer-review

Abstract

Let k be an algebraically closed field of prime characteristic p⁠, and let P be a p-subgroup of a finite group ⁠G. We give sufficient conditions for the kG-Scott module Sc(G, P) with vertex P to remain indecomposable under the Brauer construction with respect to any subgroup of ⁠P. This generalizes similar results for the case where P is abelian. The background motivation for this note is the fact that the Brauer indecomposability of a p-permutation bimodule is a key step towards showing that the module under consideration induces a stable equivalence of Morita type, which then may possibly be lifted to a derived equivalence.
Original languageEnglish
Pages (from-to)895–903
Number of pages9
JournalQuarterly Journal of Mathematics
Volume66
Issue number3
Early online date15 Apr 2015
DOIs
Publication statusPublished - Sept 2015

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