On the existence of super edge-connected graphs with prescribed degrees
On the existence of super edge-connected graphs with prescribed degrees
复制标题
关于规定度超边连通图的存在性
DOI:
10.1016/j.disc.2014.03.025
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发表时间:
2014-08
影响因子:
0.8
通讯作者:
Zhang Zhao
中科院分区:
文献类型:
--
作者:
Tian Yingzhi;Meng Jixiang;Lai Hongjian;Zhang Zhao
Let G be a connected graph of order n, minimum degree δ (G), and edge-connectivity κ′(G). The graph G is maximally edge-connected if κ′(G)= δ (G) and super edge-connected if every minimum edge-cut consists of edges incident with a vertex of minimum degree. A list (d 1,…, d n) is graphic if there is a graph with vertices v 1,…, v n such that d (v i)= d i for 1≤ i≤ n. A graphic list D is super edge-connected if D is the degree list of some super edge-connected graph. We prove that a graphic list D with least element 1 is super edge-connected if and only if (1)∑ i= 1 n d i≥ 2 n or (2)∑ i= 1 n d i= 2 (n− 1) and max {d i: 1≤ i≤ n}= n− 1. We also give a necessary and sufficient condition for a graphic list with least entry 2 to be super edge-connected, and we show that every graphic list with least element at least 3 is super edge-connected.
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影响因子:
1.4
作者:
W. Mader
通讯作者:
W. Mader
影响因子:
2.7
作者:
D. L. Wang
通讯作者:
D. L. Wang
DOI:
10.1137/0110037
发表时间:
1962-01-01
期刊:
JOURNAL OF THE SOCIETY FOR INDUSTRIAL AND APPLIED MATHEMATICS
影响因子:
--
作者:
HAKIMI, SL
通讯作者:
HAKIMI, SL
DOI:
10.1016/s0195-6698(84)80034-7
发表时间:
1984-12
期刊:
Eur. J. Comb.
影响因子:
--
作者:
Y. O. Hamidoune
通讯作者:
Y. O. Hamidoune
影响因子:
2.1
作者:
Danielle Wang;D. Kleitman
通讯作者:
Danielle Wang;D. Kleitman