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On a class of quasi-Fredholm operators

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Abstract

We study a class of bounded linear operators acting on a Banach spaceX called B-Fredholm operators. Among other things we characterize a B-Fredholm operator as the direct sum of a nilpotent operator and a Fredholm operator and we prove a spectral mapping theorem for B-Fredholm operators.

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IMemory of my father, Sidi-Bouhouria 1914-0991.

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Berkani, M. On a class of quasi-Fredholm operators. Integr equ oper theory 34, 244–249 (1999). https://doi.org/10.1007/BF01236475

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  • DOI: https://doi.org/10.1007/BF01236475

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