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图的树宽的结构性结果(英文) 被引量:5
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作者 林诒勋 《数学进展》 CSCD 北大核心 2004年第1期75-86,共12页
图G的树宽是使得G成为一个k-树的子图的最小整数k.树宽的算法性结果在图子式理论及有关领域中已有深入的研究.本文着重讨论其结构性结果,包括拓扑不变性、子式单调性、可分解性、刻画问题、与其它参数的关系及由此引伸出的性质.
关键词 图论 树宽 子式 拓扑不变 子式单调性 可分解
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Iterative Solutions for a Non-monotone BinaryOperator Equations and Operator System of Equations 被引量:9
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作者 ZHANGFei-ran ZHOUXiao-zhong 《Chinese Quarterly Journal of Mathematics》 CSCD 2004年第1期69-74,共6页
By using the theory of the cone and partial ordering. It is studied that the existence and uniqueness of solutions for a non-monotone binary operator equation A(x, x)= x and operator system of equations A(x,x)=x,B(x,x... By using the theory of the cone and partial ordering. It is studied that the existence and uniqueness of solutions for a non-monotone binary operator equation A(x, x)= x and operator system of equations A(x,x)=x,B(x,x)=x in Banach spaces. Where A and B can be decomposed A=A1+A2, B=B1+B2,A1 and B1 are mixed monotone, A2 and B2 are anti-mixed monotone. The results presented here improve and generalize some corresponding results of mixed monotone operator equations. 展开更多
关键词 cone and partial ordering operator equations anti-mixed monotone
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