We deal with the internal observability for some coupled systems of partial differential
equations with constant or time-dependent coupling terms by means of a reduced number of …

In this paper we investigate the exact controllability of n*n first order one-dimensional quasi-
linear hyperbolic systems by m<n internal controls that are localized in space in some part of …

A control system coupling fourth-and second-order parabolic equations is considered in this
paper. The main topic is the study of the control properties of this system when we only …

This paper deals with the problem of internal controllability of a system of heat equations
posed on a bounded domain with Dirichlet boundary conditions and perturbed with analytic …

We prove the null controllability of a cascade system of\(n\) coupled backward stochastic
parabolic equations involving both reaction and convection terms, as well as general …

This paper is devoted to the controllability of linear systems of two coupled parabolic
equations when the coupling involves a space dependent first order term. This system is set …

This paper is devoted to studying the null and approximate controllability of two linear
coupled parabolic equations posed on a smooth domain Ω Ω of R^ N RN (N\geqslant 1 N⩾ …

In this article, we give a necessary and sufficient condition of Kalman type for the indirect
controllability of systems of groups of linear operators, under some “regularity and locality” …

This paper aims to establish null controllability for systems coupled by two backward fourth
order stochastic parabolic equations. The main goal is to control both equations with only …

We study the null controllability of three parabolic equations. The control is acting only on
one of the three equations. The three equations are coupled by means of two cubic …