3 papers
math.FA2020
Staffans-Weiss perturbations for Maximal -regularity in Banach spaces
A. Amansag, H. Bounit, A. Driouich +1
In this paper we show that the concept of maximal -regularity is stable under a large class of unbounded perturbations, namely Staffans-Weiss perturbations. To that purpose, w…
math.FA2018
On norm continuity, differentiability and compactness of perturbed semigroups
A. Boulouz, H. Bounit, A. Driouich +1
The main purpose of this paper is to treat semigroups properties, like norm continuity, compactness and differentiability for perturbed semigroups in Banach spaces. In particular,…
math.SP2005
Spectral decomposition and Gelfand's theorem
A. Driouich, O. El-Mennaoui, M. Jazar
In this paper we are interested in spectral decomposition of an unbounded operator with discrete spectrum. We show that if generates a polynomially bounded -times integrated…