(New page: Prove that if H has index 2 in G, then H is normal in G. With the definition of index being the number of disticnts cosets of H in G. On first glance I don't have much on this, I am ...) |
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Revision as of 17:06, 28 September 2008
Prove that if H has index 2 in G, then H is normal in G.
With the definition of index being the number of disticnts cosets of H in G.
On first glance I don't have much on this, I am leaning toward doing it by contradiction, because I don't see any direct correlation between the two topics.
