Talk:Inner automorphism

Terminology

In the expression a−1xa, what are "a" and "x" called? —Preceding unsigned comment added by 69.62.226.199 (talk) 22:12, 11 August 2010 (UTC)

In the expression, x may be called the variable, and a may be called the conjugating element.Rgdboer (talk) 21:58, 21 June 2014 (UTC)

Missing information

"Inn(G) is a normal subgroup of the full automorphism group Aut(G) of G."

It is a major omission in the the Wikipedia article about inner automorphisms to merely state this fact without proof, when its proof is so straightforward.2600:1700:E1C0:F340:A983:7FD0:5C4E:20BD (talk) 02:22, 24 December 2018 (UTC)