对称Z-矩阵的惯量以及其Schur补的若干交错性质
ON INERTIA AND SOME INTERLACING PROPERTIES FOR SCHUR COMPLEMENT OF A SYMMETRIC Z-MATRIX作者机构:中国科学技术大学数学系
出 版 物:《计算数学》 (Mathematica Numerica Sinica)
年 卷 期:2002年第24卷第2期
页 面:157-164页
核心收录:
学科分类:07[理学] 070104[理学-应用数学] 0701[理学-数学]
主 题:对称Z-矩阵 惯量 Cauchy交错定理 Schur补 实矩阵
摘 要:In this paper, the inertia of a symmetric Z-matrix is studied, and bounds of the number of its positive eigenvaues are obtained. Also the interlacing theorem for Schur complement of a symmetric Z-matrix is established, which can be considered as a generalization Cauchy interlacing theorem in some extent.