A characterization of Schechter's essential spectrum by mean of measure of non-strict-singularity and application to matrix operator

DOI10.1016/S0252-9602(12)60183-0zbMath1289.47072MaRDI QIDQ376883

Nedra Moalla

Publication date: 19 November 2013

Published in: Acta Mathematica Scientia. Series B. (English Edition) (Search for Journal in Brave)

zbMATH Keywords

Fredholm operatormatrix operatormeasure of non-strict-singularitySchechter essential spectrum

Mathematics Subject Classification ID

(Semi-) Fredholm operators; index theories (47A53) Spectral operators, decomposable operators, well-bounded operators, etc. (47B40)

Related Items (7)

Lie-Trotter formula for the Hadamard product ⋮ Spectral analysis of perturbed Fredholm operators ⋮ On relative essential spectra of a 3 x 3 operator matrix involving relative generalized weak demicompactness ⋮ Stability of Schechter essential spectrum of \(2 \times 2\) block operator matrix by means of measure of non strict singularity and application ⋮ On the analysis of some perturbed Browder's operators ⋮ Generalized weak demicompactness involving measure of non-strict-singularity ⋮ Characterization and stability of the essential spectrum based on measures of polynomially non-strict singularity operators

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