Numerical radius and distance from unitary operators

DOI10.7153/OAM-07-16zbMath1295.47003arXiv1110.5036OpenAlexW2964235425MaRDI QIDQ2852250

Michel Crouzeix, Catalin Badea

Publication date: 8 October 2013

Published in: Operators and Matrices (Search for Journal in Brave)

Full work available at URL: https://arxiv.org/abs/1110.5036

zbMATH Keywords

unitary operatornumerical radiusunitary \(\rho\)-dilation

Mathematics Subject Classification ID

Numerical range, numerical radius (47A12)

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