English

Sparse pancyclic subgraphs of random graphs

Combinatorics 2023-08-04 v1

Abstract

It is known that the complete graph KnK_n contains a pancyclic subgraph with n+(1+o(1))log2nn+(1+o(1))\cdot \log _2 n edges, and that there is no pancyclic graph on nn vertices with fewer than n+log2(n1)1n+\log _2 (n-1) -1 edges. We show that, with high probability, G(n,p)G(n,p) contains a pancyclic subgraph with n+(1+o(1))log2nn+(1+o(1))\log_2 n edges for ppp \ge p^*, where p=(1+o(1))lnn/np^*=(1+o(1))\ln n/n, right above the threshold for pancyclicity.

Keywords

Cite

@article{arxiv.2308.01564,
  title  = {Sparse pancyclic subgraphs of random graphs},
  author = {Yahav Alon and Michael Krivelevich},
  journal= {arXiv preprint arXiv:2308.01564},
  year   = {2023}
}
R2 v1 2026-06-28T11:47:03.879Z