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arXiv · 1806.08136

Coloring of the dth power of the face-centered cubic grid

Nicolas Gastineau·Olivier Togni
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Abstract

The face-centered cubic grid is a three dimensional 12-regular infinite grid. This graph represents an optimal way to pack spheres in the three-dimensional space. In this grid, the vertices represent the spheres and the edges represent the contact between spheres. We give lower and upper bounds on the chromatic number of the d th power of the face-centered cubic grid. In particular, in the case d = 2 we prove that the chromatic number of this grid is 13. We also determine sharper bounds for d = 3 and for subgraphs of of the face-centered cubic grid.

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Nicolas Gastineau, Olivier Togni. 2018-06-21. Coloring of the dth power of the face-centered cubic grid. https://arxiv.org/abs/1806.08136

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