IA automorphism

In the context of mathematics, specifically in the field of group theory and algebraic structures, an "IA automorphism" generally refers to an automorphism of a group that fixes a certain subgroup, or more specifically, it preserves certain structural properties of the group. The terms "IA" typically stands for "Inner Automorphism," which refers to automorphisms that can be expressed as conjugation by an element of the group.