Identificador persistente para citar o vincular este elemento:
http://hdl.handle.net/10662/9027
| Títulos: | Preservation results for new spectral properties |
| Autores/as: | Zariouh, Hassan |
| Palabras clave: | a-Browder's theorem;Upper semi-Weyl spectrum;Propiedad de extensión de valor único (SVEP);Riesz operator;Teorema de a-Browder;Espectro de semi-Weyl superior;Single valued extension property (SVEP);Operador de Riesz |
| Fecha de publicación: | 2015 |
| Editor/a: | Universidad de Extremadura |
| Resumen: | A bounded linear operator T is said to satisfy property (S Baw) if (σ_a (T) ) ⁄σ_(SBF_+^- ) (T) = E_a^0(T); where σ_a(T) is the approximate point spectrum of T; σ_(SBF_+^- ) (T) is the upper semi-B-Weyl spectrum of T and E_a^0(T) is the set of all eigenvalues of T of finite multiplicity that are isolated in its approximate point spectrum. In this paper we give a characterization of this spectral property for a bounded linear operator having SVEP on the complementary of its upper semi-B-Weyl spectrum, and we study its stability under commuting Riesz-type perturbations. Analogous results are obtained for the properties (S Bb); (S Bab) and (S Bw): The theory is exemplified in the case of some special classes of operators. |
| URI: | http://hdl.handle.net/10662/9027 |
| Colección: | Extracta Mathematicae Vol. 30, nº 2 (2015) |
Archivos
| Archivo | Descripción | Tamaño | Formato | |
|---|---|---|---|---|
| 2605-5686_30_2_191.pdf | 127,07 kB | Adobe PDF | Descargar |
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