activity
20182023
most citedOn norm continuity, differentiability and compactness of perturbed semigroups

1 citations · 2 across the 15 of their papers we have counts for

collaborators

15 papers

math.FA2023

Integro-differential equations with delays: A perturbation approach

Hamid Bounit, Abderrahim Driouich, Said Hadd

This paper focuses on the study of integro-differential equations with delays, presenting a novel perturbation approach. The primary objective is to introduce the concepts of class…

math.PR2023

On evolution equations with white-noise boundary conditions

Mohamed Fkirine, Said Hadd, Abdelaziz Rhandi

In this paper, we delve into the study of evolution equations that exhibit white-noise boundary conditions. Our primary focus is to establish a necessary and sufficient condition f…

math.AP2022

On the admissibility of observation operators in the context of maximal regularity

Omar El Mennaoui, Said Hadd, Yassine Kharou

We study admissible observation operators for perturbed evolution equations using the concept of maximal regularity. We first show the invariance of the maximal -regularity un…

math.FA2022

On nonlinear Miyadera-Voigt perturbations

Mohamed Fkirine, Said Hadd

Let be linear operators on a Banach space such that generates a strongly continuous semigroup on , and be a globally Lipschitz fun…

math.OC2021

A semigroup approach to stochastic systems with input delay at the boundary

Said Hadd, Fatima Zahra Lahbiri

This work focuses on the well-posedness of abstract stochastic linear systems with boundary input delay and unbounded observation operators. We use product spaces and a semigroup a…

math.OC2021

Controllability of vertex delay type problems by the regular linear systems approach

Y. El Gantouh, S. Hadd, A. Rhandi

In this paper, we study the well-posedness and approximate controllability of a class of network systems having delays and controls at the boundary conditions. The particularity of…