围长为7的K_4(1,2,4,δ,ε,η)图的色等价性  

Chromatic Equivalence of a Family of K_4-homeomorphic Graphs

作　　者：邱晓鹏[1] 

机构地区：[1]西北师范大学数信学院

出　　处：《荆门职业技术学院学报》2008年第6期68-72,共5页Journal of Jingmen Technical College

摘　　要：利用色多项式研究了围长为7的k同胚图k4(1,2,4,δ,ε,η)图簇的色等价性问题,得到四对非同构的k4同胚图。这一结论有助于解决围长为7的k4同胚图的色唯一问题。In the paper,the chromatic equivalence of which has girth 7 is studied from the point of view of its chromatic polynomials, four pairs of chromatically equivalent nonisomorphic K4 - Homeomorphic graphs acquired. This conclusion helps to solve the problem of chromatic uniqueness of the K4 - Homeomorphic graphs which has girth 7.

关 键 词：K4 同胚图 色多项式 色等价 

分 类 号：O157.5[理学—数学]