An improved lower bound on a positive stable block triangular preconditioner for saddle point problems

作者：Li Cui Xia^*; Wu Shi Liang

来源：Applied Mathematics Letters, 2012, 25(12): 2174-2178.

DOI：10.1016/j.aml.2012.05.017

• Preconditioner
• Saddle point systems
• Eigenvalue

In this paper, a new lower bound on a positive stable block triangular preconditioner for saddle point problems is derived; it is superior to the corresponding result obtained by Cao [Z.-H. Cao, Positive stable block triangular preconditioners for symmetric saddle point problems, Appl. Numer. Math. 57 (2007) 899-910]. A numerical example is reported to confirm the presented result.

• 出版日期2012-12
• 单位安阳师范学院