Abstract
This paper deals with solving a class of three-by-three block saddle point problems. The systems are solved by preconditioning techniques. Based on an iterative method, we construct a block upper triangular preconditioner. The convergence of the presented method is studied in details. Finally, some numerical experiments are given to demonstrate the superiority of the proposed preconditioner over some existing ones.
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Aslani, H., Salkuyeh, D.K. A block triangular preconditioner for a class of three-by-three block saddle point problems. Japan J. Indust. Appl. Math. 40, 1015–1030 (2023). https://doi.org/10.1007/s13160-022-00561-8
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DOI: https://doi.org/10.1007/s13160-022-00561-8