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Abstract Algebra. 
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#1
Feb1710, 06:36 PM

P: 2

I have 2 algebra questions which are stumping me, I just can't seem to use my notes to figure them out!
1. Let α, β ∈ S17 where α = (17 2)(1 2 15 17 ), β = (2 3 16)(6 16 17 ). Determine η, as a product of disjoint cycles, where αη = β. 2. Let G be a group in which a^2 = 1 for all a ∈ G. Prove that G is Abelian. Hint: Consider (ab)^2. HELP PLEASE :( 


#2
Feb1710, 07:53 PM

Mentor
P: 21,397

For 2, consider what (ab)^{2} equals.



#3
Feb1710, 07:56 PM

P: 2

Right, I've figured out 2, thanks Mark44 and I've done some of 1, but I'm stuck at the end of the question.
I have η= (2 17)(17 15 2 1)(2 3 16)(6 16 17), but I'm not sure if that's right though. I also don't know where to go from there. 


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