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Jul 19, 2011 at 16:35 history closed Martin Brandenburg
Andreas Blass
Igor Rivin
Autumn Kent
S. Carnahan
too localized
Jul 19, 2011 at 16:06 comment added Andreas Blass The question has been completely answered, even though the answer isn't (yet) marked as accepted, so it should be closed.
Jul 18, 2011 at 17:33 comment added Geoff Robinson It CAN be true when H is not inside Z(G) that G is nilpotent if G/H is nilpotent but it is not GUARANTEED to be true. If H is contained in Z(G), it is guaranteed to be true that G is nilpotent if G/H is nilpotent. How to prove this may depend on the definition(s) you have used for nilpotent groups.
Jul 18, 2011 at 16:40 comment added Igor Rivin Sounds an awful lot like homework. Voting to close.
Jul 18, 2011 at 15:41 history edited Francesco Polizzi CC BY-SA 3.0
added 4 characters in body; edited body
Jul 18, 2011 at 15:40 answer added Francesco Polizzi timeline score: 2
Jul 18, 2011 at 15:23 history asked Roberto CC BY-SA 3.0