Abstract
In [7] the following conjecture is stated: every tessellation of the Euclidean plane with convex tiles induces a non-hyperbolic graph. It is natural to think that this statement holds since the Euclidean plane is non-hyperbolic. Furthermore, there are several results supporting this conjecture. However, this work shows that the conjecture is false.
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Carballosa, W. Gromov hyperbolicity and convex tessellation graph. Acta Math. Hungar. 151, 24–34 (2017). https://doi.org/10.1007/s10474-016-0677-z
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DOI: https://doi.org/10.1007/s10474-016-0677-z