Abstract
—We say that two edges in the hypercube are close if their endpoints form a 2-dimensional subcube. We consider the problem of constructing a 2-factor not containing close edges in the hypercube graph. For solving this problem,we use the new construction for building 2-factors which generalizes the previously known stream construction for Hamiltonian cycles in a hypercube.Owing to this construction, we create a family of 2-factors without close edges in cubes of all dimensions starting from 10, where the length of the cycles in the obtained 2-factors grows together with the dimension.
References
I. S. Bykov, “On Locally Balanced Gray Codes,” Diskretn. Anal. Issled. Oper. 23 (1), 51–64 (2016) [J. Appl. Indust. Math. 10 (1), 78–85 (2016)].
A. A. Evdokimov, “Chain of Maximal Length in a Unitary n-Dimensional Cube,” Mat. Zametki 6, 309–319 (1969) [Math. Notes 6, 642–648 (1969)].
D. S. Krotov, “Inductive Construction of Perfect Ternary Constant-Weight Codes with Distance 3,” Problemy Peredachi Inform. 37 (1), 3–11 (2001) [Problems Inform. Transmission 37 (1), 1–9 (2001)].
A. L. Perezhogin, “On Locally Isometric Coding of Natural Numbers,” Diskretn. Anal. Issled. Oper. 3 (4), 69–76 (1996).
A. L. Perezhogin, “On Special Perfect Matchings in a Boolean Cube,” Diskretn. Anal. Issled. Oper. Ser. 1, 12 (4), 51–59 (2005).
A. L. Perezhogin and V. N. Potapov, “On the Number of Hamiltonian Cycles in a Boolean Cube,” Diskretn. Anal. Issled. Oper. Ser. 1, 8 (2), 52–62 (2001).
J. Fink, “PerfectMatchings Extend to Hamilton Cycles in Hypercubes,” J. Combin. Theory Ser. B, 97 (6), 1074–1076 (2007).
L. Goddyn and P. Gvozdjak, “BinaryGrayCodes with Long BitRuns,” Electron. J. Combin. 10 (2003).
P. Gregor, T. Mutze, and J. Nummenpalo, “A Short Proof of the Middle Levels Theorem,” Discrete Analysis (2018). Published online at http://dx.doi.org/10.19086/da.3659.
W. H. Kautz, “Unit-Distance Error-Checking Codes,” IRE Trans. Electronic Computers EC-7, 179–180 (1958).
A. J. van Zanten and L. Haryanto, “Sets of Disjoint Snakes Based on a Reed-Muller Code and Covering the Hypercube,” Des. Codes Cryptogr. 48 (3), 207–229 (2008).
G. Zemor, “An Upper Bound on the Size of the Snake-in-the-Box,” Combinatorica 17 (2), 287–298 (1997).
Author information
Authors and Affiliations
Corresponding author
Additional information
Russian Text © The Author(s), 2019, published in Diskretnyi Analiz i Issledovanie Operatsii, 2019, Vol. 26, No. 3, pp. 5–26.
Rights and permissions
About this article
Cite this article
Bykov, I.S. 2-Factors Without Close Edges in the n-Dimensional Cube. J. Appl. Ind. Math. 13, 405–417 (2019). https://doi.org/10.1134/S1990478919030037
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S1990478919030037