English

Strangely dispersed minimal sets in the quasiperiodically forced Arnold map

Dynamical Systems 2009-11-13 v1

Abstract

We study quasiperiodically forced circle endomorphisms, homotopic to the identity, and show that under suitable conditions these exhibit uncountably many minimal sets with a complicated structure, to which we refer to as `strangely dispersed'. Along the way, we generalise some well-known results about circle endomorphisms to the uniquely ergodically forced case. Namely, all rotation numbers in the rotation interval of a uniquely ergodically forced circle endomorphism are realised on minimal sets, and if the rotation interval has non-empty interior then the topological entropy is strictly positive. The results apply in particular to the quasiperiodically forced Arnold circle map, which serves as a paradigm example.

Keywords

Cite

@article{arxiv.0807.4707,
  title  = {Strangely dispersed minimal sets in the quasiperiodically forced Arnold map},
  author = {P. Glendinning and T. Jaeger and J. Stark},
  journal= {arXiv preprint arXiv:0807.4707},
  year   = {2009}
}

Comments

21 pages, 10 figures

R2 v1 2026-06-21T11:05:33.710Z