English

Hamiltonian paths extending a set of matchings in hypercubes

Combinatorics 2025-06-27 v1

Abstract

The hypercube Qn Q_n contains a Hamiltonian path joining x x and y y (where xx and yy from the opposite partite set) containing P P if and only if the induced subgraph of P P is a linear forest, where none of these paths have x x or y y as internal vertices nor both as endpoints. Dvo\v{r}\'ak and Gregor answered a problem posed by Caha and Koubek and proved that for every n5 n \geq 5 , there exist vertices x x and y y with a set of 2n4 2n - 4 edges in Qn Q_n that extend to the Hamiltonian path joining x x and y y . This paper examines the Hamiltonian properties of hypercubes with a matching set. Let consider the hypercube Qn Q_n , for n5 n \geq 5 and a set of matching M M such that M3n13 |M| \leq 3n - 13 . We prove a Hamiltonian path exists joining two vertices xx and yy in Qn Q_n from opposite partite sets containing MM.

Keywords

Cite

@article{arxiv.2506.21432,
  title  = {Hamiltonian paths extending a set of matchings in hypercubes},
  author = {Abid Ali and Lina Ba and Weihua Yang},
  journal= {arXiv preprint arXiv:2506.21432},
  year   = {2025}
}

Comments

20 pages, 7 figures, submitted to "The computer journal"