On a characterization of the essential spectra of the sum and the product of two operators |
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| Authors: | Faiçal Abdmouleh Salma Charfi Aref Jeribi |
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| Institution: | Département de Mathématiques, Université de Sfax, Faculté des sciences de Sfax, Route de soukra Km 3.5, B.P. 1171, 3000, Sfax, Tunisia |
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| 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. |
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