# Tiling groups for Wang tiles

Abstract : We apply tiling groups and height functions to tilings of regions in the plane by Wang tiles(squares with colored boundaries) where the colors of shared edges must match. We define a set of tiles as unambiguous if it contains all tiles equivalent to the identity in its tiling group. For all but one set of unambiguous tiles with two colors, we give efficient algorithms that tell whether a given region with colored boundary is tileable, show how to sample random tilings, and how to calculate the number of local moves or flips'' required to transform one tiling into another. We also analyze the lattice structure of the set of tilings, and study several examples with three and four colors as well.
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https://hal-lara.archives-ouvertes.fr/hal-02101843
Contributor : Colette Orange <>
Submitted on : Wednesday, April 17, 2019 - 9:07:53 AM
Last modification on : Monday, May 11, 2020 - 4:20:51 PM

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RR2001-32.pdf
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• HAL Id : hal-02101843, version 1

### Citation

Cristopher Moore, Ivan Rapaport, Eric Rémila. Tiling groups for Wang tiles. [Research Report] LIP RR-2001-32, Laboratoire de l'informatique du parallélisme. 2001, 2+14p. ⟨hal-02101843⟩

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