摘要
定义了极大平面图的分离圈和分离带,并讨论了一些简单的平面图的着色问题,又给出了一类4-可着色的极大平面图.
The separating circle and separating strip of the maximum plane graph are defined. some simple problem of coloring plane graph is discussed, and one class of four-coloring maximum plane graph is given.
出处
《商洛师范专科学校学报》
2000年第4期33-34,共2页
Journal of Shangluo Teachers College
关键词
极大平面图
分离圈
分离带
4-可着色
maximum plane graph
separating circle
separating strip
four-colori