摘要
已知图K3的4色Ramsey数的上下界是51≤r4(3)≤62,利用"无和集"划分,提出改进其下界的一个证明思路。
It is known that the bounds of 4-corloring Ramsey number about is. This paper posed an idea to improve the lower bound by using "sum-free" set.
出处
《新乡学院学报》
2009年第4期1-2,21,共3页
Journal of Xinxiang University