首页 | 本学科首页   官方微博 | 高级检索  
     检索      

图是超限制性边连通的充分条件
引用本文:郭利涛,郭晓峰.图是超限制性边连通的充分条件[J].数学研究,2010,43(3):242-248.
作者姓名:郭利涛  郭晓峰
作者单位:厦门大学数学科学学院,福建,厦门361005
基金项目:supported by NSFC(No.10831001); Natural Science Foundation of Fujian Province(2010J05005)
摘    要:设G=(V,E)是连通图.边集S E是一个限制性边割,如果G-S是不连通的且G—S的每个分支至少有两个点.G的限制性连通度λ'(G)是G的一个最小限制性边割的基数.G是λ'-连通的,如果G存在限制性边割.G是λ'-最优的,如果λ'(G)=ζ(G),其中ζ(G)是min{d(x)+d(y)-2:xy是G的一条边}.进一步,如果每个最小的限制性边割都孤立一条边,则称G是超限制性边连通的或是超-λ'.G的逆度R(G)=∑_(v∈V) 1/d(v),其中d(v)是点v的度数.我们证明了G是λ'-连通的且不含三角形,如果R(G)≤2+1/ζ-ζ/((2δ-2)(2δ-3))+(n-2δ-ζ+2)/((n-2δ+1)(n-2δ+2)),则G是超-λ'.

关 键 词:互联网络  超-λ'  逆度

Sufficient Conditions for Graphs to be Super Restricted Edge Connected
Guo Litao,Guo Xiaofeng.Sufficient Conditions for Graphs to be Super Restricted Edge Connected[J].Journal of Mathematical Study,2010,43(3):242-248.
Authors:Guo Litao  Guo Xiaofeng
Institution:Guo Litao Guo Xiaofeng (School of Mathematical Sciences Xiamen University,Xiamen Fujian 361005)
Abstract:Let G =(V,E)be a connected graph.An edge set S( E is a restricted edge cut,if G-S is disconnected and every component of G-S has at least two vertices.The restricted where ξ(G)= min{ξ(e)=d(u)+d(v)-2 : e = uv ∈ E}.Furthermore,if every minimum restricted edge cut is a set of edges incident to a certain edge,then G is said to be super restricted R(G)≤2+1/δ-ξ/(2δ-2)(2δ-3)+n-2δ-ξ+2/(n-2δ+1)(n-2δ+2)
Keywords:interconnection networks  inverse degree
本文献已被 维普 万方数据 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号