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蕴含C_K图的度序列 被引量:7

Potentially C_K-graphical degree sequences
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摘要 设S是n项可图序列,σ(S)是S中的所有项之和,设G是一个简单图,σ(G,n)是使得任意n项可图序列S满足σ(S)≥m,则S有一个实现包含G的m的最小值,本文给出了σ(CK,n)的下界并证明了当n≥5时,σ(C5,n)=4n-4,当n≥7时,σ(C6,n)=4n-2。 Abstract In this paper we consider a variation of the classical extremal problems. Let S be an n-element graphical sequence, and σ(S)be the sum of the terms in S.Let G be a graph. The problem is to determine the smallest m such that any n-term graphical sequence S having σ(S)≥m has a realization containing G. Denote this value m by σ(G,n).We show σ (C2m+1,n)≥m (2n - m - 1) +2 for m ≥2, σ (C=m, n) ≥ (m - 1) (2n-m) +4 for m ≥2 ,σ(C6,n) :4n-4 for n≥5, σ(Ce,n)=4n-2 for n≥7.
作者 赖春晖
出处 《漳州师院学报》 1997年第4期27-31,共5页 Journal of ZhangZhou Teachers College(Philosophy & Social Sciences)
基金 福建省自然科学基金
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同被引文献15

  • 1尹建华,李炯生.The smallest degree sum that yields potentially K_(r,r)-graphic sequences[J].Science China Mathematics,2002,45(6):694-705. 被引量:12
  • 2陈纲.蕴含K_(3,s)-ke的可图序列[J].广西科学,2006,13(3):164-171. 被引量:1
  • 3徐正华,胡黎莉.蕴含K_(1,4)+e可图序列的刻划[J].漳州师范学院学报(自然科学版),2007,20(1):4-8. 被引量:4
  • 4GOULD R J,JACOBSON M S,LEHEL J.Potentially G-graphic degree sequences[C]//ALAVI Y.Combinatorics,Graph Theory,and Algorithms.Kalamazoo Michigan:New Issues Press,1999:451-460. 被引量:1
  • 5ERDOS P,JACOBSON M S,LEHEL J.Graphs realizing the degree sequences and their respective clique numbers[C]//ALAVI Y.Graph Theory,Combinatorics and Applications.New York:John Wiley & Sons,1991:439-449. 被引量:1
  • 6LI Jiong-sheng,SONG Zi-xia.An extremal problem on the potentially Pk-graphic sequence[J].Discrete Math,2000,212(3):223-231. 被引量:1
  • 7LI Jiong-sheng,SONG Zi-xia.The smallest degree sum that yields potentially Pk-graphic sequences[J].J Graph Theory,1998,29:63-72. 被引量:1
  • 8LAI Chun-hui.The smallest degree sum that yields potentially Ck-graphic sequences[J].Journal of Combinatorial Mathematics and Combinatorial Computing,2004,49:57-64. 被引量:1
  • 9LUO Rong.On potentially Ck-graphic sequences[J].Ars Combinatoria,2002,64:301-318. 被引量:1
  • 10KLEITMAN D J,WANG Da-lun.Algorithm for constructing graphs and digraphs with given valences and factors[J].Discrete Math,1973,6 (1):79-88. 被引量:1

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