A remark of the numerical ranges of operators on Hilbert spaces.

zbMath1045.47005MaRDI QIDQ1396052

Hideo Takemoto, Atsushi Uchiyama

Publication date: 2002

Published in: Nihonkai Mathematical Journal (Search for Journal in Brave)

zbMATH Keywords

von Neumann algebranumerical rangenormal state

Mathematics Subject Classification ID

Numerical range, numerical radius (47A12)

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