scientific article; zbMATH DE number 3627812

DOI10.1512/iumj.1980.29.29006zbMath0404.47002OpenAlexW4247934636MaRDI QIDQ4189681

Francis J. Narcowich

Publication date: 1980

Published in: Indiana University Mathematics Journal (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.1512/iumj.1980.29.29006

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zbMATH Keywords

Compact OperatorNumerical RangeAnalytRegular Analytic Arcs

Mathematics Subject Classification ID

Riesz operators; eigenvalue distributions; approximation numbers, (s)-numbers, Kolmogorov numbers, entropy numbers, etc. of operators (47B06) Numerical range, numerical radius (47A12) Perturbation theory of linear operators (47A55)

Related Items (8)

Which set is the numerical range of an operator? ⋮ Unnamed Item ⋮ Convex sets and subharmonicity of the inverse norm function ⋮ Numerical Ranges of Operators and Matrices ⋮ A note on Anderson's theorem in the infinite-dimensional setting ⋮ Numerical ranges encircled by analytic curves ⋮ Inverse continuity of the numerical range map for Hilbert space operators ⋮ Anderson’s theorem for compact operators

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