2023/06/22 by M. Baroun, Said Boulite, Baroun, M. +5
Computer Science · Engineering · Mathematics · #Advanced Mathematical Modeling in Engineering #FOS: Mathematics #Numerical methods in inverse problems #Optimization and Control (math.OC) #Stability and Controllability of Differential Equations
paper · pdf · doi:10.48550/arxiv.2306.13202
openalex publication_date 2023/06/22 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
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 includes a convection term on the diffusion part. The null controllability results rely on novel Carleman estimates for both backward and forward stochastic parabolic equations, encompassing a divergence source term interpreted in the weak sense. These Carleman estimates are established through the application of the duality technique. In doing so, we resolve some previously unanswered questions (see Remarks 2.1-2.2 in [S. Tang, and X. Zhang, SIAM J. Control Optim., 48 (2009), p.p 2191-2216]). Additionally, we present a more accurate estimation of the null-control costs.