I need to prove the following:

Let G be a group.

If s.t. , then (S is the commutator subgroup).

I just need a lead here...

Thank you in advance.

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- Dec 2nd 2013, 04:49 PMStormeyHelp with a proof - the commutator subgroup
I need to prove the following:

Let G be a group.

If s.t. , then (S is the commutator subgroup).

I just need a lead here...

Thank you in advance. - Dec 2nd 2013, 05:07 PMPlatoRe: Help with a proof - the commutator subgroup
- Dec 2nd 2013, 05:52 PMjohngRe: Help with a proof - the commutator subgroup
Stormey,

I think the commutator subgroup of G is universally denoted by G'. The easiest way to answer your question is to work in the factor group G/G'. However a direct approach is:

Let h be in H and g in G. Then [g,h^{-1}]=g^{-1}hgh^{-1}is in H and so g^{-1}hg is in H. - Dec 3rd 2013, 04:55 AMStormeyRe: Help with a proof - the commutator subgroup