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Groups and Inner Automorphisms 
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#1
Oct1111, 09:38 PM

P: 81

1. The problem statement, all variables and given/known data
Let G be a group. Show that G/Z(G) [itex]\cong[/itex] Inn(G) 3. The attempt at a solution G/Z(G) = g^{n}Z(G) for some g ε G and for any n ε N choose some g^{1} such that g(g^{1}h) = g(hg^{1}) and the same can be done switching the g and g^{1} This doesn't feel right at all... 


#2
Oct1111, 10:10 PM

Mentor
P: 18,299

Can you find a surjective homomorphism [tex]f:G\rightarrow Inn(G)[/tex] and then apply the first isomorphism theorem? 


#3
Oct1111, 10:18 PM

Sci Advisor
HW Helper
Thanks
P: 25,228




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