The

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 behavior of discrete controls when the discretization parameter goes to zero. This paper is intended to studying the ϕ-null controllability for semi-discrete stochastic semilinear parabolic equations, where the spatial variable is discretized using a finite difference scheme while the temporal variable remains continuous. The ϕ-null controllability means that terminal state can be dominated by a function that tends to zero as the spatial discretization parameter h approaches zero. The proof is based on a new refined semi-discrete Carleman estimate and Banach fixed point method. The main novelty here is that the Carleman parameters and discretization parameter are made explicit and are then used in a Banach fixed point method.

Publication Details

Journal
Springer Link (Chiba Institute of Technology)
Published
2025-12-05
DOI
https://doi.org/10.1051/cocv/2025082/pdf
Primary Topic
Stability and Controllability of Differential Equations
Type
article
Field-Weighted Citation Impact
0.00
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Springer Link (Chiba Institute of Technology)
Stability and Controllability of Differential Equations
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Abstract

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 behavior of discrete controls when the discretization parameter goes to zero. This paper is intended to studying the ϕ-null controllability for semi-discrete stochastic semilinear parabolic equations, where the spatial variable is discretized using a finite difference scheme while the temporal variable remains continuous. The ϕ-null controllability means that terminal state can be dominated by a function that tends to zero as the spatial discretization parameter h approaches zero. The proof is based on a new refined semi-discrete Carleman estimate and Banach fixed point method. The main novelty here is that the Carleman parameters and discretization parameter are made explicit and are then used in a Banach fixed point method.

Springer Link (Chiba Institute of Technology)
Openalex Percentile: Top 40%
Stability and Controllability of Differential Equations
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