Minimum pair-degee for tight Hamiltonian cycles in 4-uniform hypergraphs
Acta mathematica Universitatis Comenianae, Tome 88 (2019) no. 3, pp. 1023-1027
Christian Reiher; Vojtěch Rödl; Andrzej Ruciński; Mathias Schacht; Bjarne Schülke; Christian Reiher; Vojtěch Rödl; Andrzej Ruciński; Mathias Schacht; Bjarne Schülke. Minimum pair-degee for tight Hamiltonian cycles in 4-uniform hypergraphs. Acta mathematica Universitatis Comenianae, Tome 88 (2019) no. 3, pp. 1023-1027. http://geodesic.mathdoc.fr/item/AMUC_2019_88_3_a103/
@article{AMUC_2019_88_3_a103,
     author = {Christian Reiher and Vojt\v{e}ch R\"odl and Andrzej Ruci\'nski and Mathias Schacht and Bjarne Sch\"ulke and Christian Reiher and Vojt\v{e}ch R\"odl and Andrzej Ruci\'nski and Mathias Schacht and Bjarne Sch\"ulke},
     title = { Minimum pair-degee for tight {Hamiltonian} cycles in 4-uniform hypergraphs},
     journal = {Acta mathematica Universitatis Comenianae},
     pages = {1023--1027},
     year = {2019},
     volume = {88},
     number = {3},
     url = {http://geodesic.mathdoc.fr/item/AMUC_2019_88_3_a103/}
}
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Voir la notice de l'article provenant de la source Comenius University

We show that every 4-uniform hypergraph with n vertices and minimum pair-degree at least (5/9+o(1))n^2/2 contains a tight Hamiltonian cycle. This degree condition is asymptotically optimal. In the proof we use a variant of the absorbing method and ideas from the proof of the optimal minimum vertex degree condition for tight Hamiltonian cycles in 3-uniform hypergraphs that was obtained in a previous work by Reiher, Rödl, Ruciński, Schacht, and Szemerédi.