If A and B are unitary K-modules [resp. K-algebras], then there is an isomorphism of K-modules [resp.
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If A and B are unitary K-modules [resp. K-algebras], then there is an isomorphism of K-modules [resp. K-algebras] α : A ⊗K B → B ⊗K A such that α(a⊗b) = b⊗a for all a ϵ A,b ϵ B.
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Related Book For
Algebra Graduate Texts In Mathematics 73
ISBN: 9780387905181
8th Edition
Authors: Thomas W. Hungerford
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