胡红萍, 高玉斌, 杨正民. The Inertia Sets of Star Sign Patterns with Two Central Vertices[J]. 2006, (3): 194-201.DOI:
具有两个中心点的星符号模式的惯量(英文)
摘要
元素来自于集合{+
-
0}的矩阵A称为符号模式矩阵
简称符号模式.A的符号模式矩阵类定义为符号模式为A的所有实矩阵的集合.本文中
我们考虑n×n的对称符号模式A
其中除了(1
1)
(1
2)
(2
1)
(2
2)元素外
A的前两行和前两列的元素全为正的
其它的非对角元素全为零.本文给出了A(n≥2)的惯量.
Abstract
A sign pattern matrix A is a matrix whose entries are from the set {+
-
0}.The sign pattern matrix class of A is defined by the set of all real matrixes those sign pattern is A.After a research on an n×n symmetric sign pattern A with all the entries on the first two rows and columns being positive except (1
1)
(1
2)
(2
1)
(2
2) entries
and other non-diagonal entries being zero
this paper has presented the inertia of A(n≥2).
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Keywords
references
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