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无爪图中具有指定长度的路因子

高云澍,颜谨   

  1. 山东大学数学与系统科学学院, 山东济南250100
  • 收稿日期:2006-03-10 修回日期:1900-01-01 出版日期:2006-10-24 发布日期:2006-10-24
  • 通讯作者: 高云澍

Pathfactors with prescribed length in clawfree graphs

GAO Yun-peng,YAN Jin   

  1. School of Math. and System Sci., Shandong Univ., Jinan 250100, Shandong, China
  • Received:2006-03-10 Revised:1900-01-01 Online:2006-10-24 Published:2006-10-24
  • Contact: GAO Yun-peng

摘要: 在无爪图G中,设σ2(G)表示不相邻顶点度和的最小值. 令|V(G)|=n=∑ki=1ai,ai6,1ik,并且σ2(G)n+k-1,证明了对于图G中任意的k个顶点v1,v2,…vk, 都存在点不相交的路P1,P2,…Pk,使得对于1ik,都有|V(Pi)|=ai并且vi是路Pi的一个端点.

关键词: 图的剖分, 路因子, 点不相交的路

Abstract: For a clawfree graph G, let σ2(G) denote the minimum degree sum of a pair of nonadjacent vertices. Let |V(G)|=n=∑ki=1ai with ai6,1ik, and suppose that σ2(G)n+k-1. It is proved that for any k vertices v1,v2,…vk in G, there exist vertexdisjoint paths P1,P2,…Pk such that |V(Pi)|=ai and vi is a endvertex of Pi for 1ik.

Key words: vertexdisjoint paths , pathfactors, graph partition

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