On saturated fusion systems and Brauer indecomposability of Scott modules

Radha Kessar, Naoko Kunugi, Naofumi Mitsuhashi

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)


Let p be a prime number, G a finite group, P a p-subgroup of G and k an algebraically closed field of characteristic p. We study the relationship between the category FP(G) and the behavior of p-permutation kG-modules with vertex P under the Brauer construction. We give a sufficient condition for FP(G) to be a saturated fusion system. We prove that for Scott modules with abelian vertex, our condition is also necessary. In order to obtain our results, we give a criterion for the categories arising from the data of (b,G)-Brauer pairs in the sense of Alperin–Broué and Broué–Puig to be saturated fusion systems on the underlying p-group.
Original languageEnglish
Pages (from-to)90-103
Number of pages14
JournalJournal of Algebra
Issue number1
Early online date8 Jun 2011
Publication statusPublished - 15 Aug 2011


  • representations of finite groups
  • fusion systems
  • saturated triples
  • Scott modules


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