Definition:Isomorphism Class (Algebraic Structures)

Definition
Let $\struct {S, \circ}$ be an algebraic structure.

Let $\map \II {S, \circ}$ be the class of all algebraic structures which are isomorphic to $S$.

Then $\map \II {S, \circ}$ is known as the isomorphism class of $\struct {S, \circ}$.