RUS  ENG
Full version
JOURNALS // Doklady Rossijskoj Akademii Nauk. Mathematika, Informatika, Processy Upravlenia // Archive

Dokl. RAN. Math. Inf. Proc. Upr., 2022 Volume 502, Pages 37–41 (Mi danma235)

This article is cited in 1 paper

MATHEMATICS

On the strong chromatic number of random hypergraphs

T. G. Matveevaa, A. E. Khuzievab, D. A. Shabanovabc

a Lomonosov Moscow State University, Moscow, Russia
b National Research University "Higher School of Economics", Moscow, Russia
c Moscow Institute of Physics and Technology (National Research University), Dolgoprudny, Russia

Abstract: The paper deals with the study of the probability threshold for the property of strong colorability with given number of colors of the random $k$-uniform hypergraph in the binomial model $H(n,k,p)$. A vertex coloring of a hypergraph is said to be strong if any edge does not have two vertices of the same color under it. We study the problem of finding the sharp probability threshold of the existence of a strong coloring with $q$ colors for $H(n,k,p)$. By using the second moment method we obtain very tight bounds for this value provided that $q$ is large enough in comparison with $k$.

Keywords: random hypergraph, colorings of hypergraphs, probability thresholds, strong chromatic number, second moment method.

UDC: 519.174, 519.179.1, 519.179.4

Presented: A. N. Shiryaev
Received: 15.11.2021
Revised: 15.11.2021
Accepted: 20.12.2021

DOI: 10.31857/S268695432201009X


 English version:
Doklady Mathematics, 2022, 105:1, 31–34

Bibliographic databases:


© Steklov Math. Inst. of RAS, 2024