Nordhaus-Gaddum-type results for the generalized edge-connectivity of graphs

Nordhaus-Gaddum-type results for the generalized edge-connectivity of graphs
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DOI:
10.1016/j.dam.2014.12.009
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发表时间:
2012-12
期刊:
Discret. Appl. Math.
影响因子:
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通讯作者:
Xueliang Li;Y. Mao
Xueliang Li;Y. Mao
中科院分区:
其他
文献类型:
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作者:
Xueliang Li;Y. Mao

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设是一个图,是的一组顶点,并且是成对边不相交树的最大数目,使得对于每个。的广义边连通性定义为$\lambda_k(G)= min\{\lambda(S)|S\subseteq V(G)\ and \|S| =k\}$。因此。在本文中,我们考虑Nordhaus-Gaddum型结果的参数。我们确定尖锐的上界和下界的图的顺序,以及图的顺序和大小。文中还给出了一些达到这些界的图类。
Letbe a graph,be a set of vertices of, andbe the maximum numberof pairwise edge-disjoint treesinsuch thatfor every. The generalized-edge-connectivityofis defined as $\lambda_k(G)= min\{\lambda(S) | S\subseteq V(G) \ and \ |S|=k\}$. Thus. In this paper, we consider the Nordhaus-Gaddum-type results for the parameter. We determine sharp upper and lower bounds ofandfor a graphof order, as well as for a graph of orderand size. Some graph classes attaining these bounds are also given.