汇报标题 (Title)：Error analysis of spectral method for fractional optimal control problems (分数阶最优节造问题的谱步骤的误差分析)
汇报人 (Speaker)：陈艳萍 教授（漯河邮电大学）
汇报功夫 (Time)：2024年6月4日(周二) 10:00-12:00
汇报地址 (Place)：校本部F309
约请人(Inviter)：李常品、蔡敏
主办部门：理学院数学系
汇报提要：In this talk, we investigate an optimal control problem governed by a time fractional diffusion equation with non-homogeneous boundary condition. We construct a suitable weak formulation, study its well-posedness, and develop a spectral Galerkin method for its numerical solution. The main contributions of this work are: 1) the study of optimality conditions, which is crucial for analyzing the optimal control problem; 2) the derivation of a priori error estimates for the space-time spectral approximation; 3) the derivation of a posteriori error estimates for the state, costate, and control approximations; 4) the conduct of numerical experiments to confirm the efficiency of the proposed method. The obtained numerical results demonstrate exponential convergence for smooth exact solutions.
