Investigating the numerical range and q-numerical range of non square matrices

DOI10.7494/OpMath.2011.31.3.303zbMath1237.15018arXiv0904.4325MaRDI QIDQ3172615

John Maroulas, Aikaterini Aretaki

Publication date: 5 October 2011

Published in: Opuscula Mathematica (Search for Journal in Brave)

Full work available at URL: https://arxiv.org/abs/0904.4325

zbMATH Keywords

numerical rangeprojectorssingular valuesmatrix normsnonsquare matrices

Mathematics Subject Classification ID

Norms (inequalities, more than one norm, etc.) of linear operators (47A30) Eigenvalues, singular values, and eigenvectors (15A18) Norms of matrices, numerical range, applications of functional analysis to matrix theory (15A60) Numerical range, numerical radius (47A12)

Related Items (2)

Birkhoff-James approximate orthogonality sets and numerical ranges ⋮ Eigenvalue characterization of some structured matrix pencils under linear perturbation

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