December 4th, 2007, 11:39 AM  #1 
Newbie Joined: Dec 2007 Posts: 3 Thanks: 0  inner automorphism
How do i find the inner automorphism groups of S_2p, A_2p and D_2p, p is a prime ? 
December 7th, 2007, 07:52 AM  #2 
Newbie Joined: Dec 2007 From: Paris Posts: 3 Thanks: 0 
A general theorem claims that Inn(G) ~ G/Z(G) where Z(G) is G center. Z(G) is not too difficult to find is your groups. 

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