A note on intersecting hypergraphs with large cover number

We give a construction of r-partite r-uniform intersecting hypergraphs with cover number at least r − 4 for all but finitely many r. This answers a question of Abu-Khazneh, Barát, Pokrovskiy and Szabó, and shows that a long-standing unsolved conjecture due to Ryser is close to being best possible fo...

وصف كامل

التفاصيل البيبلوغرافية
المؤلفون الرئيسيون: Haxell, P, Scott, A
التنسيق: Journal article
منشور في: Electronic Journal of Combinatorics 2017