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Left–Right Fredholm and Weyl Spectra of the Sum of Two Bounded Operators and Applications

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Abstract

In this paper, we consider the sum of two bounded linear operators defined on a Banach space and we present some new and quite general conditions to investigate their essential spectra.

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Authors and Affiliations

  1. Département de Mathématiques, Université de Sfax, Faculté des sciences de Sfax, Route de soukra Km 3.5, B.P. 1171, 3000, Sfax, Tunisia

    Hatem Baloudi & Aref Jeribi

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  1. Hatem Baloudi
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  2. Aref Jeribi
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Correspondence to Aref Jeribi.

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Baloudi, H., Jeribi, A. Left–Right Fredholm and Weyl Spectra of the Sum of Two Bounded Operators and Applications. Mediterr. J. Math. 11, 939–953 (2014). https://doi.org/10.1007/s00009-013-0372-z

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  • DOI: https://doi.org/10.1007/s00009-013-0372-z

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