A fast solver for multidimensional time–space fractional diffusion equation with variable coefficients

2019 ◽  
Vol 78 (5) ◽  
pp. 1477-1489 ◽  
Author(s):  
Xue-Lei Lin ◽  
Michael K. Ng
Keyword(s):  
Diffusion Equation ◽  
Fractional Diffusion ◽  
Variable Coefficients ◽  
Fractional Diffusion Equation ◽  
Fast Solver ◽  
Time Space ◽  
Space Fractional Diffusion Equation

scholarly journals Identifying the space source term problem for time-space-fractional diffusion equation

2020 ◽  
Vol 2020 (1) ◽  
Author(s):  
Erdal Karapinar ◽  
Devendra Kumar ◽  
Rathinasamy Sakthivel ◽  
Nguyen Hoang Luc ◽  
N. H. Can
Keyword(s):  
Diffusion Equation ◽  
Source Term ◽  
Fractional Diffusion ◽  
Fractional Diffusion Equation ◽  
Choice Rule ◽  
Parameter Choice ◽  
Time Space ◽  
Space Fractional Diffusion Equation ◽  
Ill Posed ◽  
Regularized Solution

Abstract In this paper, we consider an inverse source problem for the time-space-fractional diffusion equation. Here, in the sense of Hadamard, we prove that the problem is severely ill-posed. By applying the quasi-reversibility regularization method, we propose by this method to solve the problem (1.1). After that, we give an error estimate between the sought solution and regularized solution under a prior parameter choice rule and a posterior parameter choice rule, respectively. Finally, we present a numerical example to find that the proposed method works well.

scholarly journals Backward problem for a time-space fractional diffusion equation

2018 ◽  
Vol 12 (3) ◽  
pp. 773-799 ◽  
Author(s):  
Junxiong Jia ◽  
◽  
Jigen Peng ◽  
Jinghuai Gao ◽  
Yujiao Li ◽  
...  
Keyword(s):  
Diffusion Equation ◽  
Fractional Diffusion ◽  
Fractional Diffusion Equation ◽  
Backward Problem ◽  
Time Space ◽  
Space Fractional Diffusion Equation
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