English

Cover 3-uniform hypergraphs by vertex-disjoint tight paths

Combinatorics 2022-05-05 v2

Abstract

Let HH be an nn-vertex 3-uniform hypergraph such that every pair of vertices is in at least n/3+o(n)n/3+o(n) edges. We show that HH contains two vertex-disjoint tight paths whose union covers the vertex set of HH. The quantity two here is best possible and the degree condition is asymptotically best possible. This result also has an interpretation as the \emph{deficiency problems}, recently introduced by Nenadov, Sudakov and Wagner: every such HH can be made Hamiltonian by adding at most two vertices and all triples intersecting them.

Keywords

Cite

@article{arxiv.2003.11686,
  title  = {Cover 3-uniform hypergraphs by vertex-disjoint tight paths},
  author = {Jie Han},
  journal= {arXiv preprint arXiv:2003.11686},
  year   = {2022}
}

Comments

19 pages, revision based on referee comments. arXiv admin note: text overlap with arXiv:1411.4957 by other authors

R2 v1 2026-06-23T14:27:33.568Z