English

Tilings of amenable groups

Group Theory 2015-02-10 v1

Abstract

We prove that for any infinite countable amenable group GG, any ϵ>0\epsilon > 0 and any finite subset KGK\subset G, there exists a tiling (partition of GG into finite "tiles" using only finitely many "shapes"), where all the tiles are (K;ϵ)(K; \epsilon)-invariant. Moreover, our tiling has topological entropy zero (i.e., subexponential complexity of patterns). As an application, we construct a free action of GG (in the sense that the mappings, associated to different from unity elements of GG, have no fixpoints), on a zero-dimensional space, and which has topological entropy zero.

Keywords

Cite

@article{arxiv.1502.02413,
  title  = {Tilings of amenable groups},
  author = {Tomasz Downarowicz and Dawid Huczek and Guohua Zhang},
  journal= {arXiv preprint arXiv:1502.02413},
  year   = {2015}
}

Comments

23 pages

R2 v1 2026-06-22T08:25:16.598Z