Mohammed Berkani

On a class of quasi-Fredholm operators

Mohammed Berkani · Integral Equations and Operator Theory · 1999 · 186 citations

Linear Operator, Riemann-hilbert Problem, Resolvent Kernel +2

On semi B-Fredholm operators

Mohammed Berkani, M. Sarih · Glasgow Mathematical Journal · 2001 · 159 citations · Full text

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

Mohammed Berkani · Proceedings of the American Mathematical Society · 2001 · 146 citations · Full text

Spectral Theory, Math Xmlns, Linear Operator +6

B-Weyl spectrum and poles of the resolvent

Mohammed Berkani · Journal of Mathematical Analysis and Applications · 2002 · 85 citations

Resolvent Kernel, Spectral Analysis, Exotic State +1

Restriction of an operator to the range of its powers

Mohammed Berkani · Studia Mathematica · 2000 · 80 citations · Full text

Linear Operator, Bounded Linear Operator, Operators T +2