Abstract
In this paper, the Cauchy problem associated with the biharmonic equation is investigated. We prove that in principle, the problem is severely ill-posed in the sense of Hadamard. Therefore, we propose a quasi-boundary value-type regularization method for stabilizing the ill-posed problem. Very sharp convergence estimates are established based on some a priori information on the exact solution. Finally, several numerical examples with random data are provided to show the effectiveness of the proposed method.
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Norhashidah Hj. Mohd. Ali.
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Luan, T.N., Khieu, T.T. & Khanh, T.Q. Regularized Solution of the Cauchy Problem for the Biharmonic Equation. Bull. Malays. Math. Sci. Soc. 43, 757–782 (2020). https://doi.org/10.1007/s40840-018-00711-7
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DOI: https://doi.org/10.1007/s40840-018-00711-7
Keywords
- Biharmonic equation
- Fourth-order elliptic equation
- Cauchy problem
- Regularization method
- A posteriori parameter choice rule