English

Spanning clique subdivisions in pseudorandom graphs

Combinatorics 2025-04-03 v1

Abstract

In this paper, we study the appearance of a spanning subdivision of a clique in graphs satisfying certain pseudorandom conditions. Specifically, we show the following three results. Firstly, that there are constants C>0C>0 and c(0,1]c\in (0,1] such that, whenever d/λCd/\lambda\ge C, every (n,d,λ)(n,d,\lambda)-graph contains a spanning subdivision of KtK_t for all 2tmin{cd,cnlogn}2\le t \le \min\{cd,c\sqrt{\frac{n}{\log n}}\}. Secondly, that there are constants C>0C>0 and c(0,1]c\in (0,1] such that, whenever d/λClog3nd/\lambda\ge C\log^3n, every (n,d,λ)(n,d,\lambda)-graph contains a spanning nearly-balanced subdivision of KtK_t for all 2tmin{cd,cnlog3n}2\le t \le \min\{cd,c\sqrt{\frac{n}{\log^3n}}\}. Finally, we show that for every μ>0\mu>0, there are constants c,ε(0,1]c,\varepsilon\in (0,1] and n0Nn_0\in \mathbb N such that, whenever nn0n\ge n_0, every nn-vertex graph with minimum degree at least μn\mu n and no bipartite holes of size εn\varepsilon n contains a spanning nearly-balanced subdivision of KtK_t for all 2tcn2\le t \le c\sqrt{n}.

Keywords

Cite

@article{arxiv.2504.01642,
  title  = {Spanning clique subdivisions in pseudorandom graphs},
  author = {Hyunwoo Lee and Matías Pavez-Signé and Teo Petrov},
  journal= {arXiv preprint arXiv:2504.01642},
  year   = {2025}
}

Comments

16 pages, 1 figure

R2 v1 2026-06-28T22:43:46.185Z