双对角占优矩阵的对角Schur余  

On Diagonal-Schur Complements for Doubly Diagonally Dominant Matrices

作　　者：崔淑玉[1] 

机构地区：[1]菏泽学院数学系,山东菏泽274015

出　　处：《菏泽学院学报》2008年第2期21-23,共3页Journal of Heze University

摘　　要：根据双对角占优矩阵的Schur余仍然是双对角占优矩阵,可以猜想双对角占优矩阵的对角Schur余也仍然是双对角占优矩阵.进一步讨论了|α|=1的情形.The Schur complements of doubly diagonally dominant matrices are also doubly diagonally dominant matrices. In this paper, we conjecture that the diagonal -Schur complements of doubly diagonally dominant matrices are also doubly diagonally dominant matrices. It is proved that the conjecture is true if ｜α｜ = 1

关 键 词：对角占优矩阵 双对角古优矩阵 SCHUR余 对角Schur余 

分 类 号：O151.21[理学—数学]