Approximation of the block numerical range of block operator matrices

DOI10.2298/FIL1912877YzbMath1497.47007OpenAlexW3007727417MaRDI QIDQ5864493

Jiahui Yu, Alatancang Chen, Jiaojiao Wu, Jun-Jie Huang

Publication date: 7 June 2022

Published in: Filomat (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.2298/fil1912877y

zbMATH Keywords

projection methodblock operator matrixblock numerical range

Mathematics Subject Classification ID

Numerical range, numerical radius (47A12) Linear operator approximation theory (47A58) Operator matrices (47A08)

Cites Work

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• Total decomposition and block numerical range
• Numerical range and accretivity of operator products
• Approximation of the quadratic numerical range of block operator matrices
• The Block Numerical Range of an n × n Block Operator Matrix

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