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http://hdl.handle.net/10662/13380
| Title: | Browder and semi-Browder operators and perturbation function |
| Authors: | Fakhfakh, Fatma Mnif, Maher |
| Keywords: | Browder and semi-Browder operators;Perturbation and coperturbation function;Browder's spectrum;Operadoras de ceja y semi-ceja;Función de perturbación y coperturbación;Espectro de browder |
| Issue Date: | 2009 |
| Publisher: | Universidad de Extremadura |
| Abstract: | Browder and semi-Browder operators and perturbation function This paper is devoted to the investigation of the stability of closed densely defined semi-Browder and Browder operators on Banach spaces. Our approach consists to introduce the concepts of a perturbation function and a coperturbation function in order to deduce the stability under strictly singular and cosingular operator perturbations. Further, our results are used to show the invariance of Browder's spectrum. |
| URI: | http://hdl.handle.net/10662/13380 |
| ISSN: | 0213-8743 |
| Appears in Collections: | Extracta Mathematicae Vol. 24, nº 3 (2009) |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| 0213-8743_24_3_219.pdf | 204,63 kB | Adobe PDF | View/Open |
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