Abstract
We study the probability threshold for the property of strong colorability with a given number of colors of a 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. The problem of finding a sharp probability threshold for the existence of a strong coloring with q colors for \(H(n,k,p)\) is studied. By using the second moment method, we obtain fairly tight bounds for this quantity, provided that q is large enough in comparison with k.
Similar content being viewed by others
REFERENCES
J. Schmidt, “Probabilistic analysis of strong hypergraph coloring algorithms and the strong chromatic number,” Discrete Math. 66, 258–277 (1987).
E. Shamir, “Chromatic number of random hypergraphs and associated graphs,” Adv. Comput. Res 5, 127–142 (1989).
M. Krivelevich and B. Sudakov, “The chromatic numbers of random hypergraphs,” Random Struct. Algorithms 12 (4), 381–403 (1998).
T. Łuczak, “The chromatic number of random graphs,” Combinatorica 11 (1), 45–54 (1991).
H. Hatami and M. Molloy, “Sharp thresholds for constraint satisfaction problems and homomorphisms,” Random Struct. Algorithms 33 (3), 310–332 (2008).
D. Achlioptas and A. Naor, “The two possible values of the chromatic number of a random graph,” Ann. Math. 162 (3), 1335–1351 (2005).
A. Coja-Oghlan, “Upper-bounding the k-colorability threshold by counting cover,” Electron. J. Combinatorics 20 (3), Research Paper No. 32 (2013).
A. Coja-Oghlan and D. Vilenchik, “The chromatic number of random graphs for most average degrees,” Int. Math. Res. Notices 2016 (19), 5801–5859 (2015).
A. E. Balobanov and D. A. Shabanov, “On the strong chromatic number of a random 3-uniform hypergraph,” Discrete Math. 344 (3), 112231 (2021).
A. E. Khuzieva, “On strong colorings of 4-uniform random hypergraphs,” Trudy Mosk. Fiz.-Tekh. Inst. 11 (2), 91–107 (2019).
M. Dyer, A. Frieze, and C. Greenhill, “On the chromatic number of a random hypergraph,” J. Combinatorial Theory, Ser. B 113, 68–122 (2015).
P. Ayre, A. Coja-Oghlan, and C. Greenhill, “Hypergraph coloring up to condensation,” Random Struct. Algorithms 54 (4), 615–652 (2019).
D. A. Shabanov, “Estimating the r-colorability threshold for a random hypergraph,” Discrete Appl. Math. 282, 168–183 (2020).
A. Semenov and D. Shabanov, “On the weak chromatic number of random hypergraphs,” Discrete Appl. Math. 276, 134–154 (2020).
A. S. Semenov, “Two-colorings of a random hypergraph,” Theory Probab. Appl. 64 (1), 59–77 (2019).
Funding
The second and third authors acknowledge the support of the Russian Foundation for Basic Research, project no. 20-31-70039. The research of the third author was supported by the Russian Federation President Grant, project no. MD-1562.2020.1.
Author information
Authors and Affiliations
Corresponding author
Ethics declarations
The authors declare that they have no conflicts of interest.
Additional information
Translated by I. Ruzanova
Rights and permissions
About this article
Cite this article
Matveeva, T.G., Khuzieva, A.E. & Shabanov, D.A. On the Strong Chromatic Number of Random Hypergraphs. Dokl. Math. 105, 31–34 (2022). https://doi.org/10.1134/S1064562422010094
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S1064562422010094