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混合Ramsey数x2(m,Pn)的下界
On the mixed Ramsey numbers:total chromatic number versus paths
【摘要】 以 X2(G)记一图 G 之全色数,Pn 表示 n 阶路,全色数与路的混合 Ramsey数 X2(m,Pn)为最小正整数 p,对干每个 p 阶图 G,或者 X2(G)≥m,或者补图 PN,Clcves 和 Jacobson 曾得到 n≥2m-2时 X2(m,Px)的准确值和 m≤n≤2m-3时X2(m,Pn)的上、下界.当 n<m 时,X2(m,Pn)的上界不难得到,笔者将讨论 n<m 时X2(m,Pn)的下界.
【Abstract】 Let the total chromatic number of a graph G be denoted by X22(G),and the path of order n by PR.The mixed Ramsey number X2(m,PN)is the least positive integer P such that for any graph G of order p,either X2(G)≥m or the complement G- contains PR as a subgraph.Cleves and Jaeobson obtained the.exact values of X2(m,PR)for n≥2m—2 and the upper and lower bounds for m≤n≤2m—3.We have obtained some lower bounds of X2(m,PR)for n<m.
- 【文献出处】 西安电子科技大学学报 ,Journal of Xidian University , 编辑部邮箱 ,1996年S1期
- 【分类号】O157.5
- 【下载频次】9