Module of covariants: Difference between revisions

Revision as of 18:24, 7 June 2014

Revision as of 18:45, 7 June 2014

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In algebra, given a group ''G'', a ''G''-module ''M'' and a ''G''-algebra ''A'', both over a field ''k'', the '''module of covariants''' is the <math>A^G</math>-module

:<math>(M \otimes_k A)^G</math>.