English

On subgraphs with degrees of prescribed residues in the random graph

Combinatorics 2021-07-16 v1

Abstract

We show that with high probability the random graph Gn,1/2G_{n, 1/2} has an induced subgraph of linear size, all of whose degrees are congruent to r(modq)r\pmod q for any fixed rr and q2q\geq 2. More generally, the same is true for any fixed distribution of degrees modulo qq. Finally, we show that with high probability we can partition the vertices of Gn,1/2G_{n, 1/2} into q+1q+1 parts of nearly equal size, each of which induces a subgraph all of whose degrees are congruent to r(modq)r\pmod q. Our results resolve affirmatively a conjecture of Scott, who addressed the case q=2q=2.

Keywords

Cite

@article{arxiv.2107.06977,
  title  = {On subgraphs with degrees of prescribed residues in the random graph},
  author = {Asaf Ferber and Liam Hardiman and Michael Krivelevich},
  journal= {arXiv preprint arXiv:2107.06977},
  year   = {2021}
}