Theoretical Computer Science ( IF 0.9 ) Pub Date : 2020-09-21 , DOI: 10.1016/j.tcs.2020.09.035 Min Xu , Pingshan Li
The connectivity of a graph is an important issue in graph theory and is also one of the most important factors in evaluating the reliability and fault tolerance of a network. A graph G is called m-edge-fault-tolerant strongly Menger (m-EFTSM for short) edge connected if there are edge-disjoint paths between any two different vertices x and y in for any with .
In this paper, we give a necessary and sufficient condition of EFTSM edge connectivity on regular graphs. And we obtain several optimal results about EFTSM edge connectivity on (1, 2)-matching composition networks, each of which is constructed by connecting two graphs via one or two perfect matchings. As applications, we show that the class of n-dimensional hypercube-like networks (included hypercube, crossed cube et al.) are -EFTSM edge connected; show that the n-dimensional folded hypercube is -EFTSM edge connected, and show that the n-dimensional augmented cube is -EFTSM edge connected. The bounds and are sharp.
中文翻译:
规则图上的容错能力强的Menger边缘连通性
图的连通性是图论中的重要问题,也是评估网络的可靠性和容错性的最重要因素之一。如果存在,则将图G称为m边缘容错强Menger(简称为m -EFTSM)边缘连接任何两个不同的顶点之间的边缘不相交的路径X和ÿ在 对于任何 与 。
在本文中,我们在规则图上给出了EFTSM边缘连通性的充要条件。并且我们获得了关于(1,2)匹配合成网络上EFTSM边缘连通性的几个最佳结果,每个结果都是通过一个或两个完美匹配连接两个图而构造的。作为应用程序,我们证明了n维超立方体样网络(包括超立方体,交叉立方体等)的类是-EFTSM边缘连接;证明n维折叠超立方体是-EFTSM边连接,并显示n维增强立方体为-EFTSM边缘已连接。界限 和 敏锐。