Let A and B rings, M a B-module and a ring morphism. Prove that the action defines a structure of A-module over M.

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- November 7th 2008, 10:13 PMroportering morphism and modules
Let A and B rings, M a B-module and a ring morphism. Prove that the action defines a structure of A-module over M.

thanks!! - November 8th 2008, 01:42 AMNonCommAlg