Gallai‐Ramsey number for K 4

Gallai‐Ramsey number for K 4
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DOI:
10.1002/jgt.22514
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发表时间:
2019-01
影响因子:
0.9
通讯作者:
Henry Liu;Colton Magnant;Akira Saito;I. Schiermeyer;Yongtang Shi
Henry Liu;Colton Magnant;Akira Saito;I. Schiermeyer;Yongtang Shi
中科院分区:
数学3区
文献类型:
--
作者:
Henry Liu;Colton Magnant;Akira Saito;I. Schiermeyer;Yongtang Shi

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给定一个图H,k-着色Gallai-Ramsey数grk(K3:H)被定义为最小整数n,使得n个顶点上的完全图的每个k-着色(使用所有k种颜色)包含彩虹三角形或H的单色副本。最近,Fox等人[J. Combin. Theory Ser. B,111(2015),pp. 75-125]证明了完全图的Gallai-Ramsey数的值。我们验证了这个猜想的第一个开放的情况下,其中H=K4。
Given a graph H , the k ‐colored Gallai‐Ramsey number grk(K3⁢ :H) is defined to be the minimum integer n such that every k ‐coloring (using all k colors) of the complete graph on n vertices contains either a rainbow triangle or a monochromatic copy of H . Recently, Fox et al [J. Combin. Theory Ser. B, 111 (2015), pp. 75–125] conjectured the value of the Gallai‐Ramsey numbers for complete graphs. We verify this conjecture for the first open case, where H=K4 .