automorphism

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  22637 Automorphism 1. Let T be any automorphism of G, show that ZT<(subset) Z. If G is a group and Z is the center of G. By definition, Z(G)={x|xy=yx for any y in G}. You didn't give the definition of ZT.

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  This week lecture is taught about Isomorphism, automorphism and Inner automorphism, but I don't understand what they are. Can you give some simple examples? Please see the attached file.