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- Title
Lopsided shift-splitting preconditioner for saddle point problems with three-by-three structure.
- Authors
Zhang, Na; Li, Rui-Xia; Li, Jian
- Abstract
In this paper, a new preconditioner that combines the lopsided idea with the shift technique is proposed for the saddle point problem with three-by-three structure. The new preconditioner has computational advantages to implement within Krylov subspace acceleration. The convergence properties of the iteration method and the spectral distribution of the corresponding preconditioned matrix are analyzed. Numerical results show that the proposed new preconditioner is competitive with some existing preconditioners studied recently.
- Subjects
KRYLOV subspace; SADDLERY; HAIR conditioners
- Publication
Computational & Applied Mathematics, 2022, Vol 41, Issue 6, p1
- ISSN
0101-8205
- Publication type
Article
- DOI
10.1007/s40314-022-01944-w