Markov partitions for toral $\mathbb{Z}^2$-rotations featuring Jeandel-Rao Wang shift and model sets
Abstract
We define a partition and a -rotation (-action defined by rotations) on a 2-dimensional torus whose associated symbolic dynamical system is a minimal proper subshift of the Jeandel-Rao aperiodic Wang shift defined by 11 Wang tiles. We define another partition and a -rotation on whose associated symbolic dynamical system is equal to a minimal and aperiodic Wang shift defined by 19 Wang tiles. This proves that is a Markov partition for the -rotation on . We prove in both cases that the toral -rotation is the maximal equicontinuous factor of the minimal subshifts and that the set of fiber cardinalities of the factor map is . The two minimal subshifts are uniquely ergodic and are isomorphic as measure-preserving dynamical systems to the toral -rotations. It provides a construction of these Wang shifts as model sets of 4-to-2 cut and project schemes. A do-it-yourself puzzle is available in the appendix to illustrate the results.
Keywords
Cite
@article{arxiv.1903.06137,
title = {Markov partitions for toral $\mathbb{Z}^2$-rotations featuring Jeandel-Rao Wang shift and model sets},
author = {Sébastien Labbé},
journal= {arXiv preprint arXiv:1903.06137},
year = {2021}
}
Comments
v1:26 pages, 10 figures. v2:32 pages, 13 figures. v3: various small fixes