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| | PlanetMath: Rayleigh-Ritz theorem |
 | | By Schur's canonical form theorem, any normal (and hence any hermitian) matrix is unitarily diagonalizable, i.e. |
 | | So, since all eigenvalues of a hermitian matrix are real, it's possible to write: |
 | | Cross-references: bounds, eigenvalues of a Hermitian matrix are real, unitary matrix, diagonalizable, normal, theorem, canonical, relations, complex, satisfies, stationary, column vector, transposition, similar, Calculus, matrix, derivatives, imaginary part, equations, real, eigenvalues, real function, Rayleigh quotient, vectors, critical points, eigenvectors, Hermitian matrix |
| planetmath.org /encyclopedia/RayleighRitzTheorem.html (223 words) |
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