Perfect 2-colorings of Hamming graphs. / Bespalov, Evgeny A.; Krotov, Denis S.; Matiushev, Aleksandr A. et al.
In: Journal of Combinatorial Designs, Vol. 29, No. 6, 06.2021, p. 367-396.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Perfect 2-colorings of Hamming graphs
AU - Bespalov, Evgeny A.
AU - Krotov, Denis S.
AU - Matiushev, Aleksandr A.
AU - Taranenko, Anna A.
AU - Vorob'ev, Konstantin V.
N1 - Funding Information: This study was funded by the Russian Science Foundation under grant 18‐11‐00136 (Sections 1–A.2, except Theorems 4.13 and 4.14 (1), whose early versions occurred as a part of the graduate thesis of Aleksandr Matiushev in the Novosibirsk State University); the work of Anna Taranenko was supported in part (Section A.3) by an award of the contest “Young Russian Mathematics.” Publisher Copyright: © 2021 Wiley Periodicals LLC Copyright: Copyright 2021 Elsevier B.V., All rights reserved.
PY - 2021/6
Y1 - 2021/6
N2 - We consider the problem of existence of perfect 2-colorings (equitable 2-partitions) of Hamming graphs with given parameters. We start with conditions on parameters of graphs and colorings that are necessary for their existence. Next we observe known constructions of perfect colorings and propose some new ones giving new parameters. At last, we deduce which parameters of colorings are covered by these constructions and give tables of admissible parameters of 2-colorings in Hamming graphs (Formula presented.) for small (Formula presented.) and (Formula presented.). Using the connection with perfect colorings, we construct an orthogonal array OA(2048, 7, 4, 5).
AB - We consider the problem of existence of perfect 2-colorings (equitable 2-partitions) of Hamming graphs with given parameters. We start with conditions on parameters of graphs and colorings that are necessary for their existence. Next we observe known constructions of perfect colorings and propose some new ones giving new parameters. At last, we deduce which parameters of colorings are covered by these constructions and give tables of admissible parameters of 2-colorings in Hamming graphs (Formula presented.) for small (Formula presented.) and (Formula presented.). Using the connection with perfect colorings, we construct an orthogonal array OA(2048, 7, 4, 5).
KW - equitable partition
KW - graph covering
KW - Hamming graph
KW - perfect code
KW - perfect coloring
UR - http://www.scopus.com/inward/record.url?scp=85102249444&partnerID=8YFLogxK
U2 - 10.1002/jcd.21771
DO - 10.1002/jcd.21771
M3 - Article
AN - SCOPUS:85102249444
VL - 29
SP - 367
EP - 396
JO - Journal of Combinatorial Designs
JF - Journal of Combinatorial Designs
SN - 1063-8539
IS - 6
ER -
ID: 28078983