𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Fredholm, Semi-Fredholm Perturbations, and Essential Spectra

✍ Scribed by Khalid Latrach; Abdelkader Dehici

Publisher
Elsevier Science
Year
2001
Tongue
English
Weight
181 KB
Volume
259
Category
Article
ISSN
0022-247X

No coin nor oath required. For personal study only.

✦ Synopsis

This paper is devoted to the investigation of the stability of the various essential spectra of closed densely defined linear operators under perturbations belonging to any two-sided ideal of the algebra of bounded linear operators contained in the set of Fredholm perturbations. Our results generalize many known ones in the Ε½ literature and, in particular, extend and unify those obtained by K. Latrach 1999, . Ε½

πŸ“œ SIMILAR VOLUMES

Some Results on Fredholm Operators, Esse
Some Results on Fredholm Operators, Essential Spectra, and Application
✍ Khalid Latrach; Aref Jeribi πŸ“‚ Article πŸ“… 1998 πŸ› Elsevier Science 🌐 English βš– 294 KB

In this paper, after a characterization of a class of bounded Fredholm operators on Banach spaces, we investigate the essential spectra of closed, densely defined linear operators on L spaces. The obtained results are used to describe the p essential spectra of one-dimensional transport equations wi