Definition:Identity (Abstract Algebra)/Right Identity

Definition
Let $\struct {S, \circ}$ be an algebraic structure. An element $e_R \in S$ is called a right identity :
 * $\forall x \in S: x \circ e_R = x$

Also known as

 * Right neutral element
 * Right unit

Also see

 * Definition:Left Identity
 * Definition:Identity Element