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Let H be a subgroup of a group G. We call H characteristic in G if for any automorphism σ∈Aut(G) of G, we have σ(H)=H. (a) Prove that if σ(H)⊂H for all σ∈Aut(G), then H is characteristic in G. (b) Prove
asked
Jan 28, 2020
Mathematics
high-school
1
answer
0
votes
156k
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Can someone please help me
asked
Jan 28, 2019
English
high-school
1
answer
0
votes
95.3k
views
why does the narrator think she should not come to big D's spring break party? in the book the hate u give
asked
Jan 13, 2019
English
high-school
1
answer
4
votes
138k
views
How do general elections affect the structure and makeup of congress and its ablity to make laws?
asked
Jan 1, 2019
History
middle-school
1
answer
0
votes
104k
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