5 papers
Feedback theory approach to positivity and stability of evolution equations
Abed Boulouz, Hamid Bounit, Said Hadd
In this paper, we study the positivity and (uniform) exponential stability of a large class of perturbed semigroups. Our approach is essentially based on the feedback theory of inf…
Analysis and control of integro-differential Volterra equations with delays
Younes ElKadiri, Said Hadd, Hamid Bounit
The purpose of this paper is to introduce a semigroup approach to linear integro-differential systems with delays in state, control and observation parts. On the one hand, we use p…
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…
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,…
Maximal -regularity for perturbed evolution equations in Banach spaces
A. Amansag, H. Bounit, A. Driouich +1
The main purpose of this paper is to investigate the concept of maximal -regularity for perturbed evolution equations in Banach spaces. We mainly consider three classes of per…