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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- Nov 15th 2009, 08:01 AMMagics6Prove that G is abelian iff...
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? - Nov 15th 2009, 08:11 AMtonio