A block moment method to handle spectral condensation phenomenon in parabolic control problems

A Benabdallah, F Boyer… - Annales Henri …, 2020 - ahl.centre-mersenne.org
This article is devoted to the characterization of the minimal null control time for abstract
linear control problem. More precisely we aim at giving a precise answer to the following …

Sharp estimates for biorthogonal families to exponential functions associated to complex sequences without gap conditions

M González-Burgos, L Ouaili - ar**. Part 1. Distributed control
S Avdonin, J Edward, SA Ivanov - Journal of Differential Equations, 2025 - Elsevier
Let Δ be the Dirichlet Laplacian on the interval (0, π). The null controllability properties of the
equation ut t+ Δ 2 u+ ρ (− Δ) α ut= F (x, t) are studied. Let T> 0, and assume initial conditions …

Boundary null controllability of some multi-dimensional linear parabolic systems by the moment method

F Boyer, G Olive - Annales de l'Institut Fourier, 2023 - hal.science
In this article we study the null controllability of some abstract linear parabolic systems in
tensor product spaces. This special structure allows us to reduce our controllability problem …

Distributed null-controllability of some 1D cascade parabolic systems

F Boyer, M Morancey - 2024 - hal.science
We consider several coupled systems of one-dimensional linear parabolic equations where
only one equation is controlled with a distributed control. For these systems we study the …