Schur's lemma (disambiguation)

At least three well-known results in mathematics bear the name Schur's lemma: Schur's lemma from representation theory Schur's lemma from Riemannian geometry Schur's lemma in linear algebra says that every square complex matrix is unitarily triangularizable, see Schur decomposition Schur test for boundedness of integral operators

See also Schur's theorem Schur's property Schur complement