English

Dynamical quasitilings of amenable group

Dynamical Systems 2017-05-23 v1

Abstract

We prove that for any compact zero-dimensional metric space XX on which an infinite countable amenable group GG acts freely by homeomorphisms, there exists a dynamical quasitiling with good covering, continuity, F{\o}lner and dynamical properties, i.e to every xXx\in X we can assign a quasitiling Tx\mathcal{T}_x of GG (with all the Tx\mathcal{T}_x using the same, finite set of shapes) such that the tiles of Tx\mathcal{T}_x are disjoint, their union has arbitrarily high lower Banach Density, all the shapes of Tx\mathcal{T}_x are large subsets of an arbitrarily large F{\o}lner set, and if we consider Tx\mathcal{T}_x to be an element of a shift space over a certain finite alphabet, then the mapping xTxx\mapsto \mathcal{T}_x is a factor map.

Keywords

Cite

@article{arxiv.1705.07365,
  title  = {Dynamical quasitilings of amenable group},
  author = {Tomasz Downarowicz and Dawid Huczek},
  journal= {arXiv preprint arXiv:1705.07365},
  year   = {2017}
}
R2 v1 2026-06-22T19:53:38.402Z