Abstract
Consider a hypergraph \(H_n^d\) where the vertices are points of the d-dimensional combinatorial cube \(n^d\) and the edges are all sets of n points such that they are in one line. We study the structure of the group of automorphisms of \(H_n^d\), i.e., permutations of points of \(n^d\) preserving the edges. In this paper we provide a complete characterization. Moreover, we consider the Colored Cube Isomorphism problem of deciding whether for two colorings of the vertices of \(H_n^d\) there exists an automorphism of \(H_n^d\) preserving the colors. We show that this problem is \(\mathsf {GI}\)-complete.
P. Dvořák—The research leading to these results has received funding from the European Research Council under the European Union’s Seventh Framework Programme (FP/2007-2013) / ERC Grant Agreement no. 616787.
T. Valla—Supported by the Centre of Excellence – Inst. for Theor. Comp. Sci. 79 (project P202/12/G061 of GA ČR).
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- 1.
The parameter is the maximum number of vertices colored by the same color.
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Dvořák, P., Valla, T. (2016). Automorphisms of the Cube \(n^d\) . In: Dinh, T., Thai, M. (eds) Computing and Combinatorics . COCOON 2016. Lecture Notes in Computer Science(), vol 9797. Springer, Cham. https://doi.org/10.1007/978-3-319-42634-1_33
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DOI: https://doi.org/10.1007/978-3-319-42634-1_33
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