Domination in tournaments
Domination in tournaments
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在锦标赛中称霸
DOI:
10.1016/j.jctb.2017.10.001
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发表时间:
2017
期刊:
影响因子:
--
通讯作者:
Thomassé, Stéphan
中科院分区:
文献类型:
--
作者:
Chudnovsky, Maria;Kim, Ringi;Liu, Chun-Hung;Seymour, Paul;Thomassé, Stéphan
We investigate the following conjecture of Hehui Wu: for every tournamentS, the class ofS-free tournaments has bounded domination number. We show that the conjecture is false in general, but true whenSis 2-colourable (that is, its vertex set can be partitioned into two transitive sets); the latter follows by a direct application of VC-dimension. Our goal is to go beyond this; we give a non-2-colourable tournamentSthat satisfies the conjecture. The key ingredient here (perhaps more interesting than the result itself) is that we overcome the unboundedness of the VC-dimension by showing that the set of shattered sets is sparse.
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期刊:
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DOI:
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