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arXiv:1010.1786 [math.FA]AbstractReferencesReviewsResources

The Schur-Horn theorem for operators with three point spectrum

John Jasper

Published 2010-10-08, updated 2012-04-05Version 2

We characterize the set of diagonals of the unitary orbit of a self-adjoint operator with three points in the spectrum. Our result gives a Schur-Horn theorem for operators with three point spectrum analogous to Kadison's result for orthogonal projections.

Journal: J.Funct.Anal. 265 (2013) 1494-1521
Categories: math.FA
Subjects: 47B15, 46C05
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