A note on the maximal numerical range

DOI10.7153/oam-2019-13-45zbMath1435.47012arXiv1803.10516OpenAlexW2973581120MaRDI QIDQ5205404

Ilya M. Spitkovskij

Publication date: 11 December 2019

Published in: Operators and Matrices (Search for Journal in Brave)

Full work available at URL: https://arxiv.org/abs/1803.10516

zbMATH Keywords

numerical rangemaximal numerical rangenormaloid operators

Mathematics Subject Classification ID

Hermitian and normal operators (spectral measures, functional calculus, etc.) (47B15) Numerical range, numerical radius (47A12)

Related Items (8)

Birkhoff–James orthogonality and algebraic maximal numerical range in C*-algebras ⋮ Maximal numerical range of the bimultiplication M_2, A, B ⋮ On the convergence of some spectral characteristics of the converging operator sequences ⋮ Unnamed Item ⋮ On the maximal numerical range of a hyponormal operator ⋮ A new class intermediate between hyponormal operators and normaloid operators ⋮ Maximal numerical range and quadratic elements in a C✻-algebra ⋮ On the maximal numerical range of the bimultiplication M_2,A,B

Cites Work

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• On the boundary of numerical ranges of operators
• The norm of a derivation
• Numerical ranges and compressions of S_n-matrices
• An observation about normaloid operators

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