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