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7个经典Ramsey数R(k,l)的新下界 被引量:12

NEW LOWER BOUNDS FOR SEVEN CLASSICAL RAMSEY NUMBERS R(k, l)
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摘要 利用构造性的方法,得到7个经典Ramsey数的新下界:R(3.29)>174.R(4.23)>272,R(5,24)>488,R(7,12)>312,R(8,18)>728,R(8,20)>860.R(9.21)>1278. By a constructive method new lower bounds for seven classical Ramsey numbers are obtained: R(3, 29) 2 174, R(4, 23) 2 272, R(5, 24) 2 488, R(7, 12) 2 312, R(8, 18) 2 728, R(8, 20) 2 860, R(9, 21) 2 1278.
出处 《系统科学与数学》 CSCD 北大核心 2000年第1期55-57,共3页 Journal of Systems Science and Mathematical Sciences
基金 广西科学基金
关键词 RAMSEY数 下界 循环图 Ramsey number, lower bound, circulant graph.
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共引文献48

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