平面图的星色数

The Planimetric Map′s Star Color Figure

由Vince引进的图的星色数的概念 ,是图的色数的一个自然推广 .本文给出了一类平面图的星色数 ,这类平面图的星色数形成了一个严格介于 3和 4之间的无穷递减序列 。

The concept of the planimetric map′s star color figure derived from Vince is a natural popularization of the map′s figure.The paper presents the star color figure of one category of planimetric map in which its figure forms into endless deductive sequence strictly occurring between the cardinal numbers 3 to 4,by which it partly answers the third question put forward by Vince.