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A parameterized shift-splitting preconditioner for saddle point problems
oleh: Li-Tao Zhang, Chao-Qian Li, Yao-Tang Li
Format: | Article |
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Diterbitkan: | AIMS Press 2019-01-01 |
Deskripsi
Recently, Chen and Ma [A generalized shift-splitting preconditioner for saddle point problems, Applied Mathematics Letters, 43 (2015) 49-55] introduced a generalized shift-splitting preconditioner for saddle point problems with symmetric positive definite (1, 1)-block. In this paper, I establish a parameterized shift-splitting preconditioner for solving the large sparse augmented systems of linear equations. Furthermore, the preconditioner is based on the parameterized shift-splitting of the saddle point matrix, resulting in an unconditional convergent fixed-point iteration, which has the intersection with the generalized shift-splitting preconditioner. In final, one example is provided to confirm the effectiveness.