On fan-wheel and tree-wheel Ramsey numbers
On fan-wheel and tree-wheel Ramsey numbers
复制标题
关于扇轮和树轮拉姆齐数
DOI:
10.1016/j.disc.2016.03.013
复制
发表时间:
2016-09
影响因子:
0.8
通讯作者:
Chen Yaojun
中科院分区:
文献类型:
--
作者:
Zhang Yanbo;Broersma Hajo;Chen Yaojun
For graphs G 1 and G 2, the Ramsey number R (G 1, G 2) is the smallest integer N such that, for any graph G of order N, G contains G 1 as a subgraph or the complement of G contains G 2 as a subgraph. Let T n denote a tree of order n, W n a wheel of order n+ 1 and F n a fan of order 2 n+ 1. We establish Ramsey numbers for fans and trees versus wheels of even order, thereby extending several known results. In particular, we prove that R (F n, W m)= 6 n+ 1 for odd m≥ 3 and n≥(5 m+ 3)/4, and that R (T n, W m)= 3 n− 2 for odd m≥ 3 and n≥ m− 2, and T n being a tree for which the Erdős–Sós Conjecture holds.
登录
查看更多内容
DOI:
--
发表时间:
2005
期刊:
--
影响因子:
--
作者:
null Surahmat;E. Baskoro;H. Broersma
通讯作者:
null Surahmat;E. Baskoro;H. Broersma
影响因子:
1.1
作者:
Alexander Sidorenko
通讯作者:
Alexander Sidorenko
DOI:
10.1002/(sici)1097-0118(199602)21:2
发表时间:
1996-02
期刊:
J. Graph Theory
影响因子:
--
作者:
O. Borodin
通讯作者:
O. Borodin
影响因子:
0.7
作者:
Binlong Li;I. Schiermeyer
通讯作者:
Binlong Li;I. Schiermeyer
影响因子:
0.7
作者:
E. Baskoro;Surahmat;S. M. Nababan;Mirka Miller
通讯作者:
E. Baskoro;Surahmat;S. M. Nababan;Mirka Miller