Definition:Involution (Mapping)

Definition
Let $A$ be a set.

Let $f: A \to A$ be a mapping on $A$.

Also known as
An involution is also known as an involutive mapping or an involutive function.

An involutive mapping can also be found described as self-inverse.

Also see

 * Equivalence of Definitions of Involutive Mapping
 * Mapping is Involution iff Bijective and Symmetric