Pure Pairs. II. Excluding All Subdivisions of A Graph
Pure Pairs. II. Excluding All Subdivisions of A Graph
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纯对。
DOI:
10.1007/s00493-020-4024-1
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发表时间:
2021
期刊:
影响因子:
1.1
通讯作者:
Spirkl, Sophie
中科院分区:
文献类型:
--
作者:
Chudnovsky, Maria;Scott, Alex;Seymour, Paul;Spirkl, Sophie
We prove for every graphHthere exists ɛ > 0 such that, for every graphGwith |G|≥2, if no induced subgraph ofGis a subdivision ofH, then either some vertex ofGhas at least ɛ|G| neighbours, or there are two disjoint setsA,B⊆V(G) with |A|,|B|≥ɛ|G| such that no edge joinsAandB. It follows that for every graphH, there existsc>0 such that for every graphG, if no induced subgraph ofGor its complement is a subdivision ofH, thenGhas a clique or stable set of cardinality at least |G|c. This is related to the Erdős-Hajnal conjecture.
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DOI:
--
发表时间:
2015
期刊:
Journal of combinatorial theory. Series B (Print)
影响因子:
--
作者:
A. Scott;P. Seymour
通讯作者:
P. Seymour
DOI:
--
发表时间:
2017
期刊:
Journal of combinatorial theory. Series B (Print)
影响因子:
--
作者:
A. Scott;P. Seymour
通讯作者:
P. Seymour
DOI:
10.37236/6768
发表时间:
2017-02
期刊:
Electron. J. Comb.
影响因子:
--
作者:
A. Scott;P. Seymour
通讯作者:
A. Scott;P. Seymour
影响因子:
0.8
作者:
V. Rödl
通讯作者:
V. Rödl
影响因子:
1.1
作者:
A. Scott;P. Seymour
通讯作者:
P. Seymour