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arxiv: 1210.0958 · v1 · pith:EV2I7E54new · submitted 2012-10-03 · 🧮 math.RA

Spectrum nonincreasing maps on matrices

classification 🧮 math.RA
keywords mapsmatricesspectrumclassifiedcomplexincreasenonincreasingsense
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Maps $\Phi$ which do not increase the spectrum on complex matrices in a sense that $\Sp(\Phi(A)-\Phi(B))\subseteq\Sp(A-B)$ are classified.

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