Quote:
Originally Posted by apple2009 g²=I for all h is an element of H.
a)Prove: H is an abelian group
b)Prove: Suppose |H|<∞. Let {h₁,h₂,…..hn} be minimal set of generators for H. The |H|=2^n |
I think it should be "then

. If so, I think you ought to be able to make a contrived answer from the way the question is posed. What is significant looking about that expression?