Crouzeix's conjecture and related problems

DOI10.1007/s40315-020-00350-9OpenAlexW3092949673WikidataQ122856284 ScholiaQ122856284MaRDI QIDQ2228045

Kelly Bickel, Thomas Ransford, Pamela Gorkin, Felix L. Schwenninger, Elias Wegert, Anne Greenbaum

Publication date: 16 February 2021

Published in: Computational Methods and Function Theory (Search for Journal in Brave)

Full work available at URL: https://arxiv.org/abs/2006.04901

zbMATH Keywords

numerical rangeshift operatorBlaschke productsnumerical radiusNevanlinna-Pick interpolationCrouzeix's conjecture

Mathematics Subject Classification ID

Norms (inequalities, more than one norm, etc.) of linear operators (47A30) Functional calculus for linear operators (47A60) Numerical range, numerical radius (47A12) Dilations, extensions, compressions of linear operators (47A20) Spectral sets of linear operators (47A25) Blaschke products (30J10)

Related Items (2)

Spectral sets, extremal functions and exceptional matrices ⋮ Dilation theory in finite dimensions and matrix convexity

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