Hostname: page-component-586b7cd67f-t7czq Total loading time: 0 Render date: 2024-11-28T03:38:45.395Z Has data issue: false hasContentIssue false

Bounded orbit injections and suspension equivalence for minimal $\mathbb{Z}^2$ actions

Published online by Cambridge University Press:  28 November 2006

SAMUEL J. LIGHTWOOD
Affiliation:
Department of Mathematics, Western Connecticut State University, 181 White Street, Danbury, CT 06810, USA (e-mail: [email protected])
NICHOLAS S. ORMES
Affiliation:
Mathematics Department, University of Denver, 2360 S. Gaylord Street, Denver, CO 80208, USA (e-mail: [email protected])

Abstract

In this paper we prove that there exist bounded orbit injections from minimal $\mathbb{Z}^{2}$ actions of a Cantor set $T$ and $S$ into a common action $R$ if and only if the suspension spaces associated to $T$ and $S$ are homeomorphic. In this way we prove a two-dimensional analog of a result of Parry and Sullivan on flow equivalence and discrete cross-sections for minimal systems. At the same time the result is a topological analog of a result of del Junco and Rudolph on Kakutani equivalence for ergodic $\mathbb{Z}^{d}$ actions. We also prove a structural result about such suspension spaces. Namely, that they are a finite union of products of Cantor sets with polygons, $C_{i}\times P_{i}$, after an identification on the boundary, $C_{i}\times \partial P_{i}$, with the action given by ${\mathbb{R}}^{2}$ on the polygon. The polygons $P_{i}$ can be chosen to have properties associated with Voronoi or Delaunay tilings corresponding to a set of points located uniformly throughout the plane.

Type
Research Article
Copyright
2006 Cambridge University Press

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)