摘要
本文讨论了△（G）＝3的Halin-图的金色数Xr（G）＝4的充分条件，并提出了3－正则Halin-图Xr（G）＝5的充分必要条件的猜想，其中△（G），Xr（G）分别表示G的最大度和全色数．
In this paper,dicusse some sufficient condition of Xr(G)=4 for Halin graphs G with (G)=3,andraised a conjecture for the sufficient and necessary condition of Xr (G)= 5 for Halin graphs G with (G)=3where (G) and Xr(G) denote the maximum degree and the total chromatic number of G respectively.
出处
《经济数学》
1997年第2期9-12,共4页
Journal of Quantitative Economics
