When is an Almost Monochromatic K4 Guaranteed?
When is an Almost Monochromatic K4 Guaranteed?
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什么时候可以保证 K4 几乎单色?
DOI:
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发表时间:
2008
期刊:
影响因子:
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通讯作者:
D. Mubayi
中科院分区:
文献类型:
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作者:
A. Kostochka;D. Mubayi
Suppose that n > (log k)ck, where c is a fixed positive constant. We prove that, no matter how the edges of Kn are coloured with k colours, there is a copy of K4 whose edges receive at most two colours. This improves the previous best bound of kc′k, where c′ is a fixed positive constant, which follows from results on classical Ramsey numbers.