Preimages of the Numerical Range

DOI10.1080/00029890.2018.1392737zbMath1393.15027OpenAlexW2777081909WikidataQ58265853 ScholiaQ58265853MaRDI QIDQ4576988

Kelly Jabbusch, John H. Clifford, Michael A. Lachance

Publication date: 11 July 2018

Published in: The American Mathematical Monthly (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.1080/00029890.2018.1392737

zbMATH Keywords

numerical rangecomplex unit sphere

Mathematics Subject Classification ID

Norms of matrices, numerical range, applications of functional analysis to matrix theory (15A60)

Cites Work

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• The constrained bilinear form and the C-numerical range
• Connectivity of level sets of quadratic forms and Hausdorff-Toeplitz type theorems
• Pre-images of boundary points of the numerical range
• A simple proof of the elliptical range theorem
• The Toeplitz-Hausdorff Theorem Explained

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