SIMULTANEOUS INVERSION OF THE SOURCE TERM AND INITIAL VALUE OF THE TIME FRACTIONAL DIFFUSION EQUATION

作者：Fan Yang, Jianming Xu, Xiaoxiao Li · 发表于：Mathematical Modelling and Analysis · 年份：2024 · DOI：10.3846/mma.2024.18133 · 被引用次数：10 · 研究领域：Fractional Differential Equations Solutions、Iterative Methods for Nonlinear Equations、Numerical methods in inverse problems

In this paper, the problem we investigate is to simultaneously identify the source term and initial value of the time fractional diffusion equation. This problem is ill-posed, i.e., the solution (if exists) does not depend on the measurable data. We give the conditional stability result under the a-priori bound assumption for the exact solution. The modified Tikhonov regularization method is used to solve this problem, and under the a-priori and the a-posteriori selection rule for the regularization parameter, the convergence error estimations for this method are obtained. Finally, numerical example is given to prove the effectiveness of this regularization method.