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Math Help - normal subgroups...

  1. #1
    TTB
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    normal subgroups...

    Hi,

    The solution to this question was really minor - almost trivial - just didn't spot it for some reason. :-s Silly me!

    Please feel free to delete this thread - it would GENUINELY be of no use to anyone.

    Thanks x
    Last edited by TTB; November 24th 2009 at 07:41 PM.
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  2. #2
    Senior Member Shanks's Avatar
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    If N is a normal group with r as a subset, then N contains all the element of the form grg^{-1}, thus contains all the finite product of these blocks.
    That is, Ar is contained in N, so the conclusion is true!
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  3. #3
    TTB
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    Of course! :-D

    I TOTALLY should have spotted that! Silly me!

    Thanks x
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