Acta mathematica scientia,Series A ›› 2023, Vol. 43 ›› Issue (2): 377-398.

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Identification of Initial Values of Space-Time Fractional Diffusion-Wave Equation

Yang Fan*(),Cao Ying,Li Xiaoxiao   

  1. School of Science, Lanzhou University of Technology, Lanzhou 730050
  • Received:2022-02-18 Revised:2022-10-17 Online:2023-04-26 Published:2023-04-17
  • Supported by:
    NSFC(11961044);Doctor Fund of Lanzhou University of Techonology and the NSF of Gausu Province(21JR7RA214)

Abstract:

In this paper, we study the identification of unknown initial values of time-space fractional diffusion-wave matrix. Firstly, we prove that the problem is ill-posed and give the conditional stability result. Then, we use Tikhonov regularization method to restore the stability of the solutions, and give the convergence error estimates under a priori regularization parameter selection rule and a posteriori regularization parameter selection rule. Finally, numerical examples show that the regularization method is effective.

Key words: Time-space fractional diffusion-wave matrix, Ill-posed problem, Identify unknown initial values, Tikhonov regularization method, Error estimation

CLC Number: 

  • O175
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