ملخص المقال

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 literature and, in particular, extend and unify those obtained by K. Latrach (1999, J. Math. Anal. Appl.233, 607–623) and K. Latrach and A. Jeribi (1998, J. Math. Anal. Appl.225, 461–485). They are used to describe the essential spectra of one-dimensional transport equations with anisotropic scattering and abstract boundary conditions.

معلومات

Item Type:	Journal
Divisions:	» كلية العلوم و التكنولوجيا
ePrint ID:	239
Date Deposited:	2014-12-19
Further Information:	Google Scholar
URI:	https://www.univ-soukahras.dz/ar/publication/article/239

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