On isotypies between Galois conjugate blocks

2010/10/25 by Radha Kessar, Kessar, Radha · 1 citation
Mathematics · #Algebraic structures and combinatorial models #Commutative Algebra and Its Applications #FOS: Mathematics #Group Theory (math.GR) #Homotopy and Cohomology in Algebraic Topology #Representation Theory (math.RT)

paper · pdf · doi:10.48550/arxiv.1010.5115

openalex publication_date 2010/10/25 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We show that between any pair of Galois conjugate blocks of finite group algebras, there exists an isotypy with all signs positive.

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• Isotypic blocks of finite groups algebras that are not p-permutation equivalent

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