A Simple Example of a Normal Operator T on a Banach Space Such That r(T) < || T ||

DOI10.2307/2047705zbMath0686.47009OpenAlexW1996093572MaRDI QIDQ4204669

Hiroyasu Yamaguchi, Muneo Chō

Publication date: 1990

Published in: Proceedings of the American Mathematical Society (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.2307/2047705

zbMATH Keywords

Banach algebraspectral radiusnormal operatornormal element

Mathematics Subject Classification ID

Subnormal operators, hyponormal operators, etc. (47B20) Numerical range, numerical radius (47A12)

Related Items (1)

A note on the joint operator norm of hermitian operators on Banach spaces

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