△(G)= 4,5,6时的Halin图的边面全色数

On Edge-Face Total Chromatic Number of Halin Graphs with △(G) = 4, 5,6

本文证明了：对△（Ｇ）＝４，５，６时的Halin图Ｇ，有Xef（Ｇ）≤６。这里Xef（Ｇ）表示图Ｇ的边面全色数，△（Ｇ）表示图Ｇ的最大度数。

In this paper,it is Proved that X_(ef)(G) ≤６ for akin Graphs with b(G) = 4, 5,6,where X_(ef)(G) denotes the edge — face total chromatic number of G, △(G)denotes maximum degree Of akin graph G.