Sunday, 5 July 2009

gr.group theory - Is a normal subgroup of a finitely presented group finitely generated or normal finitely genrated?

If G is the free group on two generators, then N the commutator subgroup is not finitely generated.
If H is any finitely generated, but not finitely presented group, then H is the quotient of a finitely generated free group G, with kernel N which is not normally finitely generated.



Steve

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