In mathematics, particularly linear algebra, the Schur–Horn theorem, named after Issai Schur and Alfred Horn, characterizes the diagonal of a Hermitian matrix with given eigenvalues. It has inspired investigations and substantial generalizations in the setting of symplectic geometry. A few important generalizations are Kostant's convexity theorem, , .
matrix theoryorder theorypropositionspectral theorystatementtheoremtheorems in linear algebratheory
Schur-Horn theoremThe Schur-Horn Theorem
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