Entropy of twist interval maps

Academic Article


  • We investigate the recently introduced notion of rotation numbers for periodic orbits of interval maps. We identify twist orbits, that is those orbits that are the simplest ones with given rotation number. We estimate from below the topological entropy of a map having an orbit with given rotation number. Our estimates are sharp: there are unimodal maps where the equality holds. We also discuss what happens for maps with larger modality. In the Appendix we present a new approach to the problem of monotonicity of entropy in one-parameter families of unimodal maps.
  • Authors

    Published In

    Digital Object Identifier (doi)

    Pubmed Id

  • 10699343
  • Author List

  • Blokh A; Misiurewicz M
  • Start Page

  • 61
  • End Page

  • 99
  • Volume

  • 102