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K_n-e图中的路因子 被引量:1

Path-factors in K_n-e graphs
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摘要 G是一个Kn-e图,e∈E(Kn),设σ2(G)表示不相邻顶点度和的最小值.令|V(G)|=n=Σi=1kai,并且σ2(G)≥n+k-1.证明对于图G中任意的k个顶点v1,v2,…vk,存在点不相交的路P1,P2,…Pk,使得对于1≤i≤k,都有|V(Pi)|=ai,并且vi是Pi的一个端点. G be a Kn-e graph, e ∈ E (Kn), let σ2 (G) denote the minimum degree sum of a pair of nonadjacent vertices, Let | V ( G ) | =n=∑^ki=1ai, and suppose that σ2( G ) ≥ n +k- 1 It is proved that for any k vertices v1, v2,… vk in G, there exist reflex disjoint paths P1 ,P2, …Pk such that |V(Pi) |=ai, and v, is a end-vertex of P, for 1 ≤i≤k .
作者 阮妮
出处 《邵阳学院学报(自然科学版)》 2009年第4期9-11,共3页 Journal of Shaoyang University:Natural Science Edition
关键词 图的划分 路因子 点不相交的路 graph partition path-factors vertex-disjoint paths
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  • 2Johansson R.An EI-Zahar type condition ensuring path-factors[J].Journal of Graph Theory,1998,28:39~42.
  • 3Hikoe Enomoto,K Ota.Partitions of a graph into paths with prescribed endvertices and lengths[J].J Graph Theory,2000,34:162~169.
  • 4Jin Yan.Some results on cycles and paths in graphs[A].The Seventh Communication Papers of Operation Research[C].HongKong:Global-Link,2004.

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同被引文献4

  • 1高云澍,颜谨.无爪图中具有指定长度的路因子[J].山东大学学报(理学版),2006,41(5):51-54. 被引量:2
  • 2Bondy J A, Murty U S R. Graph theory with applications[ M]. Amsterdam: North-holland, 1976.
  • 3Johansson R. An EI-Zahar type condition ensuring path-factors [ J ]. Journal of Graph Theory, 1998.28 : 39 -42.
  • 4Hikeo Enomoto, Kota. Partitions of a graph into paths with prescribed end-vertices and lengths [ J ]. J Graph Theory, 2000.34 : 162 - 169.

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