Inner automorphism
= Inner automorphism
{title2=$\operatorname{Inn}(G)$}
{wiki}
= Inner automorphism group
{synonym}
An inner <automorphism> is conjugation by an element of the group. The inner <automorphisms> form a <normal subgroup> $\operatorname{Inn}(G)\triangleleft\operatorname{Aut}(G)$.