符号模式矩阵与线性方程组的符号可解性

目的综述定性矩阵理论这一领域中近年来研究比较活跃的几个方面.方法检索分析了国内外相关资料.结果和结论定性矩阵理论在经济学、生物学、化学的一些定性问题的研究中有重要的应用背景,它是组合数学分支中一个重要的研究内容.作者综述了近年来这一领域中研究比较活跃的几个方面,着重介绍了一些已有的文献.

Sign Pattern Matrices and Signsolvability of Linear Systems

Aim\ To give a brief survey on the development of some aspects about qualitative matrix theory. Methods\ The interrelated data home and abroad were summarized. Result and Conclusion\ Qualitative matrix theory have many important backgrounds in studying certain qualitative problems of economics, biology and chemistry. It is an important topic in the research of combinatorinal mathematics. This paper gives a brief survey on the development of some aspects about this topic.