On a class of operators

V. Rakočević

Displaying similar documents to “On a class of operators”

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Gh. Constantin (1975)

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Yu. Abramov (1977)

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On the generalized Kato spectrum

Benharrat, Mohammed, Messirdi, Bekkai (2011)

Serdica Mathematical Journal

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2010 Mathematics Subject Classification: 47A10. We show that the symmetric difference between the generalized Kato spectrum and the essential spectrum defined in [7] by sec(T) = {l О C ; R(lI-T) is not closed } is at most countable and we also give some relationship between this spectrum and the SVEP theory.

Quasihyponormal operators and the continuity of the approximate point spectrum.

Djordjević, Slaviša V. (1997)

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The fine spectra of some Cesàro generalized operators defined on $ℓ^{p}$ ( $p > 1$ ).

Bucur, Amelia (1996)

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Diagonals of Self-adjoint Operators with Finite Spectrum

Marcin Bownik, John Jasper (2015)

Bulletin of the Polish Academy of Sciences. Mathematics

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Given a finite set X⊆ ℝ we characterize the diagonals of self-adjoint operators with spectrum X. Our result extends the Schur-Horn theorem from a finite-dimensional setting to an infinite-dimensional Hilbert space analogous to Kadison's theorem for orthogonal projections (2002) and the second author's result for operators with three-point spectrum (2013).

On the spectrum of $ψ$ -contracting operators.

Al-Nayef, Anwar A. (2001)

Journal of Applied Mathematics and Stochastic Analysis

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The essential spectrum of relativistic one-electron ions in the Jansen-Hess model.

Jakubassa-Amundsen, D.H. (2002)

Mathematical Physics Electronic Journal [electronic only]

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Different spectra for nonlinear operators.

Catană, Petronela (2005)

Analele Ştiinţifice ale Universităţii “Ovidius" Constanţa. Seria: Matematică

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Fredholm points of compactly pertubed bounded linear operators

I. Marek (1976)

Acta Universitatis Carolinae. Mathematica et Physica

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