摘要
本文引进拟亚正定阵的概念，讨论了它的若干性质及其子结构，证明了拟亚正定降的加性复合阵还是拟亚正定阵，从而改进了文［５］中的一个结果。
In this paper, the concept of quasi-hypo positive definite matrices has been introduced; several properties and its substrtrcture has been discussed and it has been proved that additive eompound matrices of quasi-hypo positive definite matrices are just quasi - hypo positive definite matrices; therofore, one result in [5]is improved.
出处
《延安大学学报（自然科学版）》
1996年第2期6-10,共5页
Journal of Yan'an University：Natural Science Edition
关键词
拟亚正定阵
亚正定阵
SCHUR补
子结构
Quasi-hypo positive definite matrices
Hypo positive definite matrices
Schur supplement
Additive compound matrices
