English

Deviation probabilities for arithmetic progressions and other regular discrete structures

Combinatorics 2021-04-01 v2 Number Theory Probability

Abstract

Let the random variable X:=e(H[B])X\, :=\, e(\mathcal{H}[B]) count the number of edges of a hypergraph H\mathcal{H} induced by a random mm element subset BB of its vertex set. Focussing on the case that H\mathcal{H} satisfies some regularity condition we prove bounds on the probability that XX is far from its mean. It is possible to apply these results to discrete structures such as the set of kk-term arithmetic progressions in the cyclic group ZN\mathbb{Z}_N. Furthermore, we show that our main theorem is essentially best possible and we deduce results for the case BBpB\sim B_p is generated by including each vertex independently with probability pp.

Keywords

Cite

@article{arxiv.1910.12835,
  title  = {Deviation probabilities for arithmetic progressions and other regular discrete structures},
  author = {Gonzalo Fiz Pontiveros and Simon Griffiths and Matheus Secco and Oriol Serra},
  journal= {arXiv preprint arXiv:1910.12835},
  year   = {2021}
}
R2 v1 2026-06-23T11:57:29.198Z