An infinite dimensional version of the Schur convexity property and applications

Details An infinite dimensional version of the Schur convexity property and applications An infinite dimensional version of the Schur convexity property and applications

2006-07-21

arxiv.org/abs/math/0607551v1

Mathematics

Analysis of PDEs

Scientific paper

We extend to infinite dimensional separable Hilbert spaces the Schur convexity property of eigenvalues of a symmetric matrix with real entries. Our framework includes both the case of linear, selfadjoint, compact operators, and that of linear selfadjoint operators that can be approximated by operators of finite rank and having a countable family of eigenvalues. The abstract results of the present paper are illustrated by several examples from mechanics or quantum mechanics, including the Sturm-Liouville problem, the Schr\"{o}dinger equation, and the harmonic oscillator.

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