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Math Help - Normalizer

  1. #1
    Junior Member
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    Normalizer

    Can u give me the definition of the N_{Aut(A)}(B) where B is a subgrroup of A.
    Last edited by dimuk; August 13th 2008 at 12:56 PM.
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  2. #2
    Senior Member JaneBennet's Avatar
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    N_A(B)=\{a\in A:aBa^{-1}=B\}
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  3. #3
    Junior Member
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    normlizer

    Yes this is the normalizer of the groups A and B. But I want to know the normalizer of automorphism of A in B.
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