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zbMath0492.47002MaRDI QIDQ3954380

Yu. Sh. Abramov

Publication date: 1981

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

zbMATH Keywords

numerical ranges zones

Mathematics Subject Classification ID

Hermitian and normal operators (spectral measures, functional calculus, etc.) (47B15) Spectrum, resolvent (47A10) Numerical range, numerical radius (47A12) Toeplitz operators, Hankel operators, Wiener-Hopf operators (47B35)

Related Items (1)

Duality in spectral optimization and numerical ranges of a family of self-adjoint operators

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