Digraphs that have at most one walk of a given length with the same endpoints
Digraphs that have at most one walk of a given length with the same endpoints
复制标题
具有相同端点的给定长度至多有一次行走的有向图
DOI:
10.1016/j.disc.2010.09.025
复制
发表时间:
2011
影响因子:
0.8
通讯作者:
X. Zhan
中科院分区:
文献类型:
--
作者:
Z. Huang;X. Zhan
Let Θ(n,k) be the set of digraphs of order n that have at most one walk of length k with the same endpoints. Let θ(n,k) be the maximum number of arcs of a digraph in Θ(n,k). We prove that if n≥5 and k≥n−1 then θ(n,k)=n(n−1)/2 and this maximum number is attained at D if and only if D is a transitive tournament. θ(n,n−2) and θ(n,n−3) are also determined.
登录
查看更多内容
影响因子:
1.1
作者:
Honglin Wu
通讯作者:
Honglin Wu
影响因子:
9.8
作者:
L. Hogben
通讯作者:
L. Hogben
影响因子:
0.5
作者:
F. Harary;L. Moser
通讯作者:
F. Harary;L. Moser
DOI:
10.1017/cbo9781107325708
发表时间:
1991-07
期刊:
--
影响因子:
--
作者:
Richard A. Brualdi;Á. Carmona;P. van den Driessche;Stephen Kirkland;D. Stevanović
通讯作者:
Richard A. Brualdi;Á. Carmona;P. van den Driessche;Stephen Kirkland;D. Stevanović
DOI:
--
发表时间:
1968
期刊:
--
影响因子:
--
作者:
J. Moon
通讯作者:
J. Moon