摘要
设G是一个图,用V(G)和E(G)表示顶点集和边集,并设g和f是定义在V(G)上的两个非负整数值函数,且g<f。图G的一个(g,f)-因子是G的一个支撑子图F,使对任意的x∈V(G)有g(x)≤dF(x)≤f(x)。如果去掉图G的任何三条边都有一个(g,f)-因子,则称图G是一个(g,f)-3-消去图,本文给出了一个图是(g,f)-3-消去图的一个充分条件。
Let G be a graph with vertex set V(G) and edge setE(G),and let g and f be two integer-valued functions defined on V(G) such that gf for every x∈V(G),A(g,f)-factor of G is a spanning subgraph F of G such that g(x)≤dF(x) for every x∈V(G).A graph G is called a(g,f)-3-deleted graph if for any three deges e1,e2,e3,of G,G has a(g,f)-factor excluding w1,e2,e3.In this paper,a sufficient condition for graphs to be(g,f)-3-deleted are given.
出处
《潍坊学院学报》
2011年第4期77-79,共3页
Journal of Weifang University