图G的一个正常全染色被称作点可区别全染色,如果G中任意两个点的色集合不同,其中每个点的色集合包含该点及其关联边的颜色。在点可区别全色数界(χvt(G)≤|V(G)|+2)的基础上,应用概率的方法得到了阶数为n,且无孤立边的简单图G的点可区别全色数的一个较小上界。
A proper total coloring of the graph G is called vertex-distinguishing total coloring,if any two vertices have different color sets,where the color set of a vertex is the set composed of all colors of the vertex and the edges incident to it.On the base of the bound of vertex-distinguishing total chromatic number(χvt(G)≤|V(G)|+2).The new upper bound of vertex-distinguishing total chromatic number is obtained by way of probability.