设G是一个二分图具有顶点集V(G)和边集E(G).设g和f是定义在V(G)上的两个正整值函数使对任意的x∈V(G)有g(x)≤f(x).G的一个(g,f)-......

Let G be an(mg,mf)-graph,where g and f are integer-valued functions defined ov V(G)and such that 0≤g(x)≤f(x)for each x......