Im trying to prove N(N(P)) = N(P)(adsbygoogle = window.adsbygoogle || []).push({});

So N(P) = set oh h where h^-1Ph = p

Then N(N(P)) = k where k^-1hk = h

the fact that p is a p sylow subgroup gives me what information? I am unsure.

Thanks in advance!

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# The normalizer of the normalizer of a p-sylow supgroup

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