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In this paper, we prove the small-time global null-controllability of forward (resp. backward) semilinear stochastic parabolic equations with globally Lipschitz nonlinearities in the drift and diffusion terms (resp. in the drift term). In…

Analysis of PDEs · Mathematics 2020-10-20 Víctor Hernández-Santamaría , Kévin Le Balc'h , Liliana Peralta

The global null controllability of stochastic semilinear parabolic equations with globally Lipschitz nonlinearities has been addressed in recent literature. However, there are no results concerning their numerical approximation and the…

Optimization and Control · Mathematics 2025-03-11 Yu Wang , Qingmei Zhao

In this paper, we study the null controllability for a stochastic semilinear CahnHilliard type equation, whose semilinear term contains first and second order derivatives of solutions. To start with, an improved global Carleman estimate for…

Optimization and Control · Mathematics 2024-08-08 Sen Zhang , Hang Gao , Ganghua Yuan

In this paper, we study the null controllability for parabolic SPDEs involving both the state and the gradient of the state. To start with, an improved global Carleman estimate for linear forward (resp. backward) parabolic SPDEs with…

Optimization and Control · Mathematics 2025-10-14 Lei Zhang , Fan Xu , Bin Liu

This paper deals with controllability properties of a cubic Ginzburg-Landau equation with dynamic boundary conditions. More precisely, we prove a local null controllability result by using a single control supported in a small subset of the…

Analysis of PDEs · Mathematics 2023-09-14 Nicolás Carreño , Alberto Mercado , Roberto Morales

This paper is addressed to a study of the null controllability for the semilinear parabolic equation with a complex principal part. For this purpose, we establish a key weighted identity for partial differential operators…

Optimization and Control · Mathematics 2008-05-27 Xiaoyu Fu

In this paper we investigate the Hierarchical null controllability of a coupled degenerate semilinear parabolic equation in domains which are moving in time. We show the local null controllability of the semilinear system using Liusternik's…

Analysis of PDEs · Mathematics 2026-02-10 Alfredo S. Gamboa , Juan Limaco , Luis P. Yapu

The main objective of this paper is to establish the null controllability for the fourth order semilinear parabolic equations with the nonlinearities involving the state and its gradient up to second order. First of all, based on optimal…

Optimization and Control · Mathematics 2022-11-03 Bo You , F. Li

We establish the null controllability of forward and backward linear stochastic parabolic equations with linear Robin (or Fourier) boundary conditions. These equations incorporate zero and first order terms with bounded coefficients. To…

Analysis of PDEs · Mathematics 2024-06-13 Said Boulite , Abdellatif Elgrou , Lahcen Maniar

We establish the null controllability for linear stochastic fourth order parabolic equations. Utilizing the duality argument, the null controllability is reduced to the observability for backward fourth order stochastic parabolic equations,…

Optimization and Control · Mathematics 2022-06-07 Qi Lü , Yu Wang

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 one control act on the drift term. To achieve this, we…

Optimization and Control · Mathematics 2024-04-15 Yu Wang

This paper is concerned with the null controllability for linear backward stochastic parabolic equations with dynamic boundary conditions and convection terms. Using the classical duality argument, the null controllability is obtained via…

Optimization and Control · Mathematics 2025-01-17 Mahmoud Baroun , Said Boulite , Abdellatif Elgrou , Lahcen Maniar

In \cite{LPP:2025}, it was shown that, in arbitrary dimension, the spatial semi-discretization of a controlled stochastic parabolic operator is generically not null-controllable. Nevertheless, $\phi$-null controllability results remain…

Optimization and Control · Mathematics 2026-04-08 Rodrigo Lecaros , Ariel A. Pérez , Manuel F. Prado

It is well-known that the controllability of finite-dimensional nonlinear systems can be established by showing the controllability of the linearized system. However, this classical result does not generalize to infinite-dimensional…

Optimization and Control · Mathematics 2021-07-29 Bernd Kolar , Markus Schöberl

In this paper, we present a null controllability result for a class of stochastic semi-discrete parabolic equations. For this purpose, an observability estimate is established for backward stochastic semi-discrete parabolic equations, with…

Optimization and Control · Mathematics 2024-02-21 Qingmei Zhao

This paper addresses null controllability for both forward and backward linear stochastic parabolic equations by introducing convection terms on the drift parts with bounded coefficients. Moreover, the forward stochastic parabolic equation…

Optimization and Control · Mathematics 2023-11-23 M. Baroun , S. Boulite , A. Elgrou , L. Maniar

This review surveys previous and recent results on null controllability and inverse problems for parabolic systems with dynamic boundary conditions. We aim to demonstrate how classical methods such as Carleman estimates can be extended to…

Optimization and Control · Mathematics 2024-09-17 S. E. Chorfi , L. Maniar

This paper concerns the null controllability for a class of stochastic degenerate parabolic equations. We first establish a global Carleman estimate for a linear forward stochastic degenerate equation with multiplicative noise. Using this…

Optimization and Control · Mathematics 2022-02-22 M. Baroun , M. Fadili , A. Khchine , L. Maniar

In this paper, we establish two Carleman estimates for a stochastic degenerate parabolic equation. The first one is for the backward stochastic degenerate parabolic equation with singular weight function. Combining this Carleman estimate…

Optimization and Control · Mathematics 2020-08-26 Bin Wu , Qun Chen , Zewen Wang

In this paper, we consider the bilinear approximate controllability for the complex Ginzburg-Landau (CGL) equation with a power-type nonlinearity of any integer degree on a torus of arbitrary space dimension. Under a saturation hypothesis…

Optimization and Control · Mathematics 2025-12-30 Xingwu Zeng , Can Zhang
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