On the Essential Numerical Range of a Generalized Derivation

DOI10.2307/2046276zbMath0616.47029OpenAlexW4230144524MaRDI QIDQ4725202

Bojan Magajna

Publication date: 1987

Full work available at URL: https://doi.org/10.2307/2046276

zbMATH Keywords

essential numerical rangeHilbert-Schmidt operatorsgeneralized derivation

Mathematics Subject Classification ID

Linear operators belonging to operator ideals (nuclear, (p)-summing, in the Schatten-von Neumann classes, etc.) (47B10) Numerical range, numerical radius (47A12) Commutators, derivations, elementary operators, etc. (47B47)

Related Items (1)

Essential numerical range of elementary operators

Cites Work

• A note on norm ideals and the operator \(X\to AX-XB\)
• Notes on extensions of \(C^*\)-algebras
• The norm of a derivation
• On the Operator Identity ∑ A_kXB_k ≡ 0
• Numerical ranges of derivations
• Linear Operator Equations
• Spectra of Tensor Products of Operators
• Ten problems in Hilbert space
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