一类广义鞍点问题的结构化向后误差  

Structured backward error for a class of generalized saddle point problems

作　　者：刘玉玲 LIU Yuling(College of Mathematics and Statistics,Northwest Normal University,Lanzhou 730070,Gansu,China)

机构地区：[1]西北师范大学数学与统计学院,甘肃兰州730070

出　　处：《山东大学学报（理学版）》2024年第10期40-45,共6页Journal of Shandong University(Natural Science)

基　　金：国家自然科学基金项目(12361082)。

摘　　要：推导一种结构的广义鞍点系统的结构化向后误差的显式表达式,并且比较结构化和非结构化向后误差,发现在某些情况下,它们之间可以相距任意远。In this paper,an explicit expression of the structured backward error of a generalized saddle point system of a structure is derived,and the structured and unstructured backward errors are compared,and it is found that they can be arbitrarily far apart in some cases.

关 键 词：结构化向后误差 广义鞍点系统 强稳定 

分 类 号：O241.1[理学—计算数学]