A short proof of the elliptical range theorem

DOI10.1007/s00013-023-01957-9arXiv2208.06248OpenAlexW4390939946WikidataQ129754572 ScholiaQ129754572MaRDI QIDQ6130281

Gyula Lakos

Publication date: 2 April 2024

Published in: Archiv der Mathematik (Search for Journal in Brave)

Full work available at URL: https://arxiv.org/abs/2208.06248

zbMATH Keywords

eigenvaluesnumerical rangeelliptical range theorem

Mathematics Subject Classification ID

Norms of matrices, numerical range, applications of functional analysis to matrix theory (15A60) Numerical range, numerical radius (47A12)

Cites Work

• The Field of Values of a Complex Matrix, an Explicit Description in the $2 \times 2$ Case
• A simple proof of the elliptical range theorem
• The Toeplitz-Hausdorff Theorem Explained

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