Prove that G is abelian if and only if the map given by is a group homomorphism. if G abelian then f is homomorphism. Nevertheless i prove only one direction of the statement. Can anybody help me?
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Originally Posted by Magics6 Prove that G is abelian if and only if the map given by is a group homomorphism. if G abelian then f is homomorphism. Nevertheless i prove only one direction of the statement. Can anybody help me? If f is a homom. then for any . Now cancel stuff here and show abelianess. Tonio
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