Invariant blocks under coprime actions
classification
🧮 math.RT
keywords
invariantblocksfinitegroupactionsactsautomorphismsbrauer
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If a finite group $A$ acts coprimely as automorphisms on a finite group $G$, then the $A$-invariant Brauer $p$-blocks of $G$ are exactly those that contain $A$-invariant irreducible characters.
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