Block numerical range and estimable decomposition of some hyponormal operators

DOI10.1007/s11785-019-00967-2zbMath1442.47014OpenAlexW3013615464MaRDI QIDQ1984642

Jiaojiao Wu, Alatancang Chen, Jiahui Yu

Publication date: 7 April 2020

Published in: Complex Analysis and Operator Theory (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.1007/s11785-019-00967-2

zbMATH Keywords

spectrumspectral measurehyponormal operatorblock numerical rangeestimable decomposition

Mathematics Subject Classification ID

Hermitian and normal operators (spectral measures, functional calculus, etc.) (47B15) Subnormal operators, hyponormal operators, etc. (47B20) Numerical range, numerical radius (47A12) Decomposition methods (49M27) Operator matrices (47A08)

Cites Work

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• Total decomposition and block numerical range
• The Jordan form of a bitriangular operator
• Spectral resolution of a hyponormal operator with the spectrum on a curve
• An inequality for the area of hyponormal spectra
• Mathematical Systems Theory I
• The Block Numerical Range of an n × n Block Operator Matrix
• Block numerical range and estimable total decompositions of normal operators
• An Extension of the Weyl-Von Neumann Theorem to Normal Operators

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