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Simultaneous inversion of the source term and initial value of the time fractional diffusion equation

    Fan Yang Affiliation
    ; Jian-ming Xu Affiliation
    ; Xiao-xiao Li Affiliation

Abstract

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.

Keyword : time fractional diffusion equation, source term and initial value, inverse problem, ill-posed, modified Tikhonov method

How to Cite
Yang, F., Xu, J.- ming, & Li, X.- xiao. (2024). Simultaneous inversion of the source term and initial value of the time fractional diffusion equation. Mathematical Modelling and Analysis, 29(2), 193–214. https://doi.org/10.3846/mma.2024.18133
Published in Issue
Mar 26, 2024
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