scientific article

zbMath0428.47001MaRDI QIDQ3865043

Michał Zając

Publication date: 1978

Full work available at URL: https://eudml.org/doc/31749

Title: zbMATH Open Web Interface contents unavailable due to conflicting licenses.

zbMATH Keywords

continuity of the spectrumnorm-normal operator

Mathematics Subject Classification ID

Spectrum, resolvent (47A10) Numerical range, numerical radius (47A12)

Cites Work

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• Bounded groups and norm-Hermitian matrices
• Some extremal problems in the theory of numerical ranges
• Continuité et uniforme continuité du spectre dans les algèbras de Banach
• Some Results on the Numerical Range of an Operator
• On Bernstein's Inequality and the Norm of Hermitian Operators
• The Norm of a Hermitian Element in a Banach Algebra