一类平面图的圆色数  

CIRCULAR CHROMATIC NUMBER OF A TYPE OF PLANAR GRAPHS

作　　者：马祖强[1] 蔡俊亮[1] 

机构地区：[1]北京师范大学数学科学学院,北京100875

出　　处：《北京师范大学学报（自然科学版）》2006年第5期447-450,共4页Journal of Beijing Normal University(Natural Science)

基　　金：国家自然科学基金资助项目(10271017)

摘　　要：由轮图出发构造了一类平面图,进而讨论了它们的一些基本性质和相互之间的同态关系,并得到了这些图的圆色数的精确值均介于2和3之间.A family of planar graphs is cestracted based on wheels, and some general properties and homomophism relationship of the graphs are discussed. Moreovel, their exact circular chrematic number are also obtained. Which is just between 2 and 3.

关 键 词：圆色数 同态 轮图 简单平面图 

分 类 号：O157.5[理学—数学]