Crossed module

In mathematics, specifically in homotopy theory, a crossed module consists of groups Gamma and A, where Gamma acts on A from the left, and a homomorphism of groups

Related Topics:
Mathematics - Homotopy theory - Group - Acts - Homomorphism

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:partial : A longrightarrow Gamma,

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that is equivariant with respect to the conjugation action of Gamma on itself such that aba^{-1}=(partial a) b.

Related Topics:
Equivariant - Conjugation

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