6 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…
Well-posedness and approximate controllability of neutral network systems
Yassine El Gantouh, Said Hadd
In this paper, we study the concept of approximate controllability of retarded network systems of neutral type. On one hand, we reformulate such systems as free-delay boundary cont…
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…