English

On quasi-invariant curves

Dynamical Systems 2019-04-17 v4 Complex Variables

Abstract

Quasi-invariant curves are used in the study of hedgehog dynamics. Denjoy-Yoccoz lemma is the preliminary step for Yoccoz's complex renormalization techniques for the study of linearization of analytic circle diffeomorphisms. We give a geometric interpretation of Denjoy-Yoccoz lemma using the hyperbolic metric that gives a direct construction of quasi-invariant curves without renormalization.

Keywords

Cite

@article{arxiv.1802.06726,
  title  = {On quasi-invariant curves},
  author = {Ricardo Pérez-Marco},
  journal= {arXiv preprint arXiv:1802.06726},
  year   = {2019}
}

Comments

arXiv admin note: text overlap with arXiv:1802.03630

R2 v1 2026-06-23T00:26:38.017Z