English

Blowing up Dirac's theorem

Combinatorics 2025-12-16 v2

Abstract

We show that every graph GG on nn vertices with δ(G)(1/2+ε)n\delta(G) \geq (1/2+\varepsilon)n is spanned by a complete blow-up of a cycle with clusters of nearly uniform size Ω(logn)\Omega(\log n). The proof is based on a recently introduced approach for finding vertex-spanning substructures via blow-up covers.

Keywords

Cite

@article{arxiv.2412.19912,
  title  = {Blowing up Dirac's theorem},
  author = {Richard Lang and Nicolás Sanhueza-Matamala},
  journal= {arXiv preprint arXiv:2412.19912},
  year   = {2025}
}

Comments

12 pages + 5 page appendix. Accepted to BLMS

R2 v1 2026-06-28T20:50:18.259Z