Group theory Lec. 12 | prove that set I(G) of all automorphism of a group G is a normal subgroup

Описание: (b) If O(G)=p^(2) where p is a rimary number.Then prove that G is an abelian group.
Prove that the set I(G) of all inner automorphism of a group G is a normal subgroup of the group A(G) of all automorphism


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