Constants related to operators of class \(C_\rho\)
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Publication:1225313
DOI10.1007/BF01323467zbMath0325.47008OpenAlexW2087373438MaRDI QIDQ1225313
Kazuyoshi Okubo, Tsuyoshi Ando
Publication date: 1975
Published in: Manuscripta Mathematica (Search for Journal in Brave)
Full work available at URL: https://eudml.org/doc/154351
Norms (inequalities, more than one norm, etc.) of linear operators (47A30) Canonical models for contractions and nonselfadjoint linear operators (47A45)
Related Items (24)
Variational analysis of the Crouzeix ratio ⋮ A Kreiss type inequality for rational functions on general domains ⋮ Spectral sets, extremal functions and exceptional matrices ⋮ An Algorithm for Finding a 2-Similarity Transformation from a Numerical Contraction to a Contraction ⋮ The Numerical Range is a $(1+\sqrt{2})$-Spectral Set ⋮ On the \(\rho\)-operator radii ⋮ Between the von Neumann inequality and the Crouzeix conjecture ⋮ Crouzeix's conjecture and perturbed Jordan blocks ⋮ Numerical range and compressions of the shift ⋮ Lemniscates and \(K\)-spectral sets ⋮ Unitary skew-dilations of Hilbert space operators ⋮ Some Extensions of the Crouzeix--Palencia Result ⋮ Symbolic calculus of operators with unit numerical radius ⋮ Numerical investigation of Crouzeix's conjecture ⋮ Some Constants Related to Numerical Ranges ⋮ Characterization of half-radial matrices ⋮ Distortion coefficients for cryptocontractions ⋮ Inner functions of numerical contractions ⋮ Near Normal Dilations of Nonnormal Matrices and Linear Operators ⋮ Dilation theory in finite dimensions and matrix convexity ⋮ Roots of Matrices in the Study of GMRES Convergence and Crouzeix's Conjecture ⋮ Complete spectral sets and numerical range ⋮ Convex domains and K-spectral sets ⋮ Tests for complete \(K\)-spectral sets
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