A new constraint preconditioner based on the PGSS iteration method for non-Hermitian generalized saddle point problems
作者：
Highlights：
• We have added two words “A” and “the” in the title, added two new references and provided a new rigorous proof of convergence of the new iteration method in Section 2. Furthermore, we have further improved the English writing of the paper.
• As suggested by Referee 1, we have revised some citation problems and given some symbol introductions.
• As suggested by Referee 2, we have revised some equations and further improved the English writing of the paper.
• As suggested by Referee 3, we have proposed a more rigorous proof to discuss the convergence of the new iteration method; see Lemma 2.2 and Theorem 2.2.
摘要
•We have added two words “A” and “the” in the title, added two new references and provided a new rigorous proof of convergence of the new iteration method in Section 2. Furthermore, we have further improved the English writing of the paper.•As suggested by Referee 1, we have revised some citation problems and given some symbol introductions.•As suggested by Referee 2, we have revised some equations and further improved the English writing of the paper.•As suggested by Referee 3, we have proposed a more rigorous proof to discuss the convergence of the new iteration method; see Lemma 2.2 and Theorem 2.2.
论文关键词：Saddle point problems,Constraint preconditioner,Iteration method,Convergence
论文评审过程：Received 27 November 2019, Revised 9 November 2020, Accepted 26 November 2020, Available online 25 December 2020, Version of Record 25 December 2020.
论文官网地址：https://doi.org/10.1016/j.amc.2020.125864
