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笛卡尔积图P_m×P_n的IC-着色 被引量:7

IC-coloring of Cartesian Product P_m×P_n
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摘要 设G是一个连通图,f个将顶点集V G对应到正整数集N的函数,对G的任意子图H,我们定义fs H=Σν∈V(H)fν。如果对任意的整数k∈Σ1,fs GΣ,存在一个G的连通子图H,使得fs H=k,则称f为图G的一个IC-着色。并定义图G的IC-指数M G为使得顶点和最大时的fs G。对两条路的笛卡尔图的IC-着色进行研究,得到了它的一个下界:对任意的2≤m≤n,有M Pm×Pn≥2m-1 2n-1。 Let G be a connected graph,and let f be a function mapping V G into N.We define fs H = Σν∈V(H) f ν for each subgraph H of G.The function f is called an IC-coloring of G if for each integer k in the set Σ1,fs GΣthere exists an(induced) connected subgraph H of G such that fs H =k,and the IC-index of G,M G,is the maximum value of fs G where f is an IC-coloring of G.In this paper,we prove that for 2≤m≤n,M Pm×Pn≥2m-1 2n-1.
作者 陈剑峰
出处 《莆田学院学报》 2011年第2期13-15,共3页 Journal of putian University
关键词 IC-着色 IC-指数 笛卡尔积图 IC-coloring IC-index path Cartesian product
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参考文献10

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二级参考文献3

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共引文献8

同被引文献31

  • 1徐保根.关于连通图的IC-着色[J].华东交通大学学报,2006,23(1):134-136. 被引量:9
  • 2Bondy J A, Murty U S R. Graph throry[M]. Berlin: Springer, 2008.
  • 3Alter R, Bmett J A. A postage stamp problem[J]. Amer Math Monthly, 1980, 87 : 206-210.
  • 4Heimer R L, Langenbach H. The stamp problem[J]. J Recreational Math, 1974, 7: 235-250.
  • 5Lunnon W F. A postage stamp problem[J]. Comput J, 1969, 12: 377-380.
  • 6Penrice S G. Some new graph labeling problems: a preliminary report [J]. D1MACS Technical Reports, 1995, 99 ( 26 ) : 1-9.
  • 7Salehi E, Lee S, Khatirinejad M. IC-colorings and 1C-indices of graphs[J]. Discrete Mathematics, 2005, 299:297-310.
  • 8Shiue Chinlin, Fu Hunglin. The IC-indices of complete bipartite graphs[J]. Electronic Journal of Combinatorics, 2008, 15:43.
  • 9Alter R, Brnett J A. A postage stamp problem [J]. Amer. Math. Monthly., 1980, 87: 206-210.
  • 10Heimer R L, Langenbach H. The stamp problem [J]. J. Recreational. Math., 1974,7: 235-250.

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