Weyl-Type Theorems on Banach Spaces Under Compact Perturbations

On a class of quasi-Fredholm operators

Mohammed Berkani · Integral Equations and Operator Theory · 1999 · 187 citations

Natural Sciences, Architectural Representation, Representation Theory +6

On semi B-Fredholm operators

Mohammed Berkani, M. Sarih · Glasgow Mathematical Journal · 2001 · 161 citations · Full text

Natural Sciences, Mathematics, Dynamical Systems +10

Index of B-Fredholm operators and generalization of a Weyl theorem

Mohammed Berkani · Proceedings of the American Mathematical Society · 2001 · 147 citations · Full text

Natural Sciences, Computer Science, Mathematics +9

Variations on Weyl's theorem

Pietro Aiena, Pedro Peña · Journal of Mathematical Analysis and Applications · 2006 · 88 citations · Full text

Natural Sciences, Philosophy, Theoretical Physics +3

Weyl Type Theorems for Left and Right Polaroid Operators

Pietro Aiena, Elvis Aponte, Edixon Balzan · Integral Equations and Operator Theory · 2010 · 88 citations

Natural Sciences, Mathematics, Algebra +8