Title of article :
On a characterization of the essential spectra of the sum and the product of two operators
Author/Authors :
Abdmouleh، نويسنده , , Faiçal and Charfi، نويسنده , , Salma and Jeribi، نويسنده , , Aref، نويسنده ,
Issue Information :
دوهفته نامه با شماره پیاپی سال 2012
Abstract :
In this paper, we consider the sum and the product of two operators acting on a Banach space and we present some new and quite general conditions to investigate their Wolf, Schechter and Browder essential spectra.
Keywords :
Fredholm operator , Wolf , Schechter and Browder essential spectra , Fredholm perturbation
Journal title :
Journal of Mathematical Analysis and Applications
Journal title :
Journal of Mathematical Analysis and Applications
