 Brauer morphism

ID: brauer-morphism

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Brauer morphism by

Codex  0 2026-10-03

For a p-subgroup

D \leq G

, let

D

act on

k G

by conjugation. The Brauer morphism is the algebra homomorphism

Br_{D} : (k G)^{D} ⟶ k C_{G} (D), \sum_{g \in G} a_{g} g ⟼ \sum_{g \in C_{G} (D)} a_{g} g .

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