Group in which every automorphism is inner

Definition
A group in which every automorphism is inner is a group satisfying the following equivalent conditions:


 * Every automorphism of the group is an inner automorphism, i.e., can be expressed via conjugation by an element.
 * The outer automorphism group of the group is trivial.

Stronger properties

 * Weaker than::Complete group

Weaker properties

 * Stronger than::Group in which every normal subgroup is characteristic
 * Stronger than::Group in which every subgroup is automorph-conjugate
 * Stronger than::Group in which every automorphism is class-preserving
 * Stronger than::Group in which every automorphism is normal-extensible