Rotated block triangular preconditioning based on PMHSS——Dedicated to Professor Shi Zhong-Ci on the

• 作 者: BAI Zhong-Zhi
• 机 构: StateKeyLaboratoryofScientific/EngineeringComputing
• 出 处: 中国科学：数学英文版
• 发表日期: 2013年12期
• 关键词: 预处理器 三角 旋转 基础 生日 块矩阵 本征特性 数值实验 block two-by-two matrix PMHSS preconditioner bl
• 基金项目: This work was supported by National Natural Science Foundation of China （Grant Nos. 11021101 and 91118001）, the Hundred Talent Project of Chinese Academy of Sciences and the National Basic Research Pr

Based on the PMHSS preconditioning matrix,we construct a class of rotated block triangular preconditioners for block two-by-two matrices of real square blocks,and analyze the eigen-properties of the corresponding preconditioned matrices.Numerical experime