Closedness of the k-numerical range

DOI10.1080/03081087.2020.1790483OpenAlexW3041165712MaRDI QIDQ5089354

J.-T. Chan, Chi-Kwong Li, Yiu-Tung Poon

Publication date: 19 July 2022

Published in: Linear and Multilinear Algebra (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.1080/03081087.2020.1790483

zbMATH Keywords

numerical rangeessential numerical range\(k\)-numerical range

Mathematics Subject Classification ID

Numerical range, numerical radius (47A12)

Related Items

Convexity of the orbit-closed C-numerical range and majorization, Closedness of the orbit-closed C-numerical range and submajorization, Joint k-numerical ranges of operators

Cites Work

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• The Boundary of the Numerical Range
• Inclusion relations involving thek-numerical range and the essential numerical range
• A note on the boundary of the joint numerical range