Year: 2024
Type: preprint
Abstract: An $n$-vertex $k$-uniform hypergraph $G$ is $(d,α)$-degenerate if $m_1(G)\le{d}$ and there exists a constant $\varepsilon >0$ such that for every subset $U\subseteq{V(G)}$ with size $2\le|U|\le{\varepsilon n}$, we have $e\left(G[U]\right)\le{d\left(|U|-1\right)-α}$. These hypergraphs include many natural graph classes, such as the degenerate hypergraphs, the planar graphs, and the power of cycles. In this paper, we consider the threshold of the emergence of a $(d,α)$-degenerate hypergraph with bounded maximum degree in the Erdős-Rényi model. We show that its threshold is at most $n^{-1/d}$, improving previous results of Riordan and Kelly-Müyesser-Pokrovskiy.
Source: arXiv (Cornell University)
Authors: Chen, Yu, Han, Jie, Luo, Haoran
Language: English
Subfield: Discrete Mathematics and Combinatorics
Field: Mathematics
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W4404995273