报告题目 (Title):Error analysis of spectral method for fractional optimal control problems (分数阶最优控制问题的谱方法的误差分析)
报告人 (Speaker):陈艳萍 教授(南京邮电大学)
报告时间 (Time):2024年6月4日(周二) 10:00-12:00
报告地点 (Place):校本部F309
邀请人(Inviter):李常品、蔡敏
主办部门:金沙威尼斯欢乐娱人城数学系
报告摘要: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.