Representation (Mathematics): Relation (Mathematics), Isomorphism, Abstract Algebra, Theory

Isomorphism: Isomorphism, Abstract Algebra, Homomorphism, Map (mathematics)

Schur's Lemma: Mathematics, Representation Theory, Group (Mathematics), Algebra, Irreducible

Operation Theory: Theory, Logic, Mathematics, Relation (mathematics)

Vectorization (Mathematics): Mathematics, Linear Algebra, Matrix Theory, Transformation, (Mathematics)