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若干完全三部图的色唯一性

Chromatic Uniqueness of a number of Complete Tripartite Graphs
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摘要 用P(G,λ)表示图G的色多项式.若对任意图H,当P(H,λ)=P(G,λ)时都有H和G同构,则称图G是色唯一的.给出了以下结果:m≥2且k≥0时,完全三部图K(m,m,m+k)是色唯一的;m≥2且m+1>k≥0时,完全三部图K(m,m+1,m+k)是色唯一的. Let G be a simple graph and P (G, λ) denote the chromatic polynomial of G. A graph C is said to be chromatically unique if for any graph H,P(H,λ) = P(C,λ) implies that H is isomorphic to G. Let K(m,n,r) denote a complete tripartite graph,this paper proved that the complete tripartite graph K(m ,m ,m + k) is chromatically unique if m 〉 2 and k 〉 0,K(m ,m + 1 ,m + k) is chromatically unique if m ≥ 2 and m + 1 〉 k ≥ 0.
作者 林永 邹辉文
出处 《数学的实践与认识》 CSCD 北大核心 2007年第5期129-133,共5页 Mathematics in Practice and Theory
关键词 完全三部图 色唯一图 色划分 色多项式 complete tripartite graph chromatically unique graph parti-tion into colour classes chromatic polynomial
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  • 1Bondy J A, Murty U S R. Graph Theory With Application[M]. The MacMillan Press, 1976. 被引量:1
  • 2I Chao C Y, Whitehead Jr E G. On chromatic equivalence of graphs[A]. Y. Alavi and D. R. Lick, Theory and Applications[C]. Springer Lecture Notes in Mathematics, 1978,642: 121-131. 被引量:1
  • 3Koh K M, Teo K L. The search for chromatically unique graphs[J]. Graphs and Combinatorics, 1990, 6: 259-285. 被引量:1
  • 4Koh K M, Teo K L. The search for chromatically unique graphs-Ⅱ[J]. Discrete Mathematics,1997,172:59-78. 被引量:1
  • 5Chia G L, Goh B H, Koh K M. The chromaticity of some families of Complete Tripartite graphs[J]. SCIENTIA,Series A: Mathematical Science,1988,2:27-37. 被引量:1
  • 6F Brenti. Expansions of chromatic polynomial and log-loncavity[J]. Trans. Amer. Math. soc,1992,332:729-756. 被引量:1
  • 7邹辉文.完全t部图K(n_1,n_2…n_t)的色唯一性[J].Journal of Mathematical Research and Exposition,2003,23(4):737-742. 被引量:4
  • 8邹辉文,施永兵.完全三部图K(n- k,n,n)的色性(英文)[J].上海师范大学学报(自然科学版),1999,28(4):15-22. 被引量:1
  • 9邹辉文.完全三部图K(n_1,n_2,n_3)的色唯一性[J].系统科学与数学,2000,20(2):181-186. 被引量:8
  • 10Huiwen Zou. The chromatic uniqueness of certain complete t-partite graphs[J]. Discrete Mathematics,2004,275:375-383. 被引量:1

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