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一类Kn-同胚图色等价类的结构特征
引用本文:龚和林,舒情.一类Kn-同胚图色等价类的结构特征[J].数学研究,2008,41(4):443-449.
作者姓名:龚和林  舒情
作者单位:上饶师范学院数学与计算机系,江西,上饶,334001
基金项目:国家自然科学基金  
摘    要:用K(s,n)表示完全图Kn的一条边被长为s(s≥2)的路Ps+1替代后得到的图.对n≥7,且n-2为素数,刻画了色等价类【K(s,n)]中图的结构特征,进一步,证明了任意任意n≥7,且n-2为素数,K(2,n),K(3,n)是色唯一的.

关 键 词:n-临界图  色等价  色唯一

On Chromaticity of a Family of Kn-Homeomorphic graph
Gong Helin,Shu Qing.On Chromaticity of a Family of Kn-Homeomorphic graph[J].Journal of Mathematical Study,2008,41(4):443-449.
Authors:Gong Helin  Shu Qing
Affiliation:Gong Helin Shu Qing ( Department of Mathematics and Computer Science, Shangrao Normal University, Shangrao Jiangxi 334001 )
Abstract:For a complete graph Kn, let K(s, n) denote the Kn-homeomorph obtained from Kn by replacing one edge of Kn by path Ps+1 with length s. This paper shows the structural features of any graph in the chromatic equivalence class K(s, n)] and proves that K(2, n), K(3, n) are chromatically unique, where n ≥ 7, and n - 2 is a prime number.
Keywords:n-critical graph  chromatical equivalence  chromatically unique graph
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