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- Title
The Quasi-Boundary Regularization Method for Recovering the Initial Value in a Nonlinear Time–Space Fractional Diffusion Equation.
- Authors
Li, Dun-Gang; Chen, Yong-Gang; Gao, Yin-Xia; Yang, Fan; Xu, Jian-Ming; Li, Xiao-Xiao
- Abstract
In this paper, we consider the inverse problem for identifying the initial value problem of the time–space fractional nonlinear diffusion equation. The uniqueness of the solution is proved by taking the fixed point theorem of Banach compression, and the ill-posedness of the problem is analyzed through the exact solution. The quasi-boundary regularization method is chosen to solve the ill-posed problem, and the error estimate between the regularization solution and the exact solution is given. Moreover, several numerical examples are chosen to prove the effectiveness of the quasi-boundary regularization method. Finally, our method can be used to solve high dimensional time–space fractional nonlinear diffusion equation, especially in cylindrical and spherical symmetric regions.
- Subjects
BURGERS' equation; INITIAL value problems; INVERSE problems; HEAT equation
- Publication
Symmetry (20738994), 2023, Vol 15, Issue 4, p853
- ISSN
2073-8994
- Publication type
Article
- DOI
10.3390/sym15040853