Symmetric family of Fredholm operators of indices zero, stability of essential spectra and application to transport operators
✍ Scribed by Faiçal Abdmouleh; Aref Jeribi
- Book ID
- 108178598
- Publisher
- Elsevier Science
- Year
- 2010
- Tongue
- English
- Weight
- 215 KB
- Volume
- 364
- Category
- Article
- ISSN
- 0022-247X
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📜 SIMILAR VOLUMES
This paper is devoted to the investigation of the essential approximate point spectrum and the essential defect spectrum of a 2 × 2 block operator matrix on a product of Banach spaces. The obtained results are applied to a two-group transport operators with general boundary conditions in the Banach
## Abstract In this paper we investigate the essential spectra of the sum of two bounded linear operators defined on a Banach space by means of the essential spectra of each of the two operators where their products are Fredholm or semi‐Fredholm perturbations. Furthermore, we give an application to