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math.FA2021
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…
math.AP2021
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…