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Math Help - subgroup of a normal subgroup...

  1. #1
    TTB
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    subgroup of a normal subgroup...

    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.

    Thanks x
    Last edited by TTB; November 24th 2009 at 08:34 PM.
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  2. #2
    Senior Member Shanks's Avatar
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    Take g_i to be the unit elment in the Group, then Ar contains r as a normal subgroup in Ar.
    Ar is called the Normalizor Group of r.
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  3. #3
    TTB
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    Oh yeh! Ofcourse. Thank you! x
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