Spectrum nonincreasing maps on matrices
Rings and Algebras
2012-10-04 v1
Abstract
Maps Φ which do not increase the spectrum on complex matrices in a sense that \Sp(Φ(A)−Φ(B))⊆\Sp(A−B) are classified.
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Cite
@article{arxiv.1210.0958,
title = {Spectrum nonincreasing maps on matrices},
author = {Gregor Dolinar and Jinchuan Hou and Bojan Kuzma and Xiaofei Qi},
journal= {arXiv preprint arXiv:1210.0958},
year = {2012}
}
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8 pages
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