English

A compact minimal space $Y$ such that its square $Y\times Y$ is not minimal

Dynamical Systems 2017-12-18 v3

Abstract

The following well known open problem is answered in the negative: Given two compact spaces XX and YY that admit minimal homeomorphisms, must the Cartesian product X×YX\times Y admit a minimal homeomorphism as well? A key element of our construction is an inverse limit approach inspired by combination of a technique of Aarts & Oversteegen and the construction of Slovak spaces by Downarowicz & Snoha & Tywoniuk. This approach allows us also to prove the following result. Let ϕ ⁣:M×RM\phi\colon M\times\mathbb{R}\to M be a continuous, aperiodic minimal flow on the compact, finite--dimensional metric space MM. Then there is a generic choice of parameters cRc\in\mathbb{R}, such that the homeomorphism h(x)=ϕ(x,c)h(x)=\phi(x,c) admits a noninvertible minimal map f ⁣:MMf\colon M\to M as an almost 1-1 extension.

Keywords

Cite

@article{arxiv.1612.09179,
  title  = {A compact minimal space $Y$ such that its square $Y\times Y$ is not minimal},
  author = {J. P. Boronski and Alex Clark and P. Oprocha},
  journal= {arXiv preprint arXiv:1612.09179},
  year   = {2017}
}

Comments

Theorem 3.6 is added, where it is shown that minimal spaces without minimal squares can appear as minimal sets of torus homeomorphisms homotopic to the identity