Rotation sets and actions on curves - Laboratoire Jean-Alexandre Dieudonné Accéder directement au contenu
Pré-Publication, Document De Travail Année : 2021

Rotation sets and actions on curves

Emmanuel Militon
Jonathan Bowden
  • Fonction : Auteur
Sebastian Hensel
  • Fonction : Auteur
Kathryn Mann
  • Fonction : Auteur
Richard Webb
  • Fonction : Auteur

Résumé

We study the action of the homeomorphism group of a surface $S$ on the fine curve graph ${\mathcal C }^\dagger(S)$. While the definition of $\mathcal{C}^\dagger(S)$ parallels the classical curve graph for mapping class groups, we show that the dynamics of the action of ${\mathrm{Homeo}}(S)$ on $\mathcal{C}^\dagger(S)$ is much richer: homeomorphisms induce parabolic isometries in addition to elliptics and hyperbolics, and all positive reals are realized as asymptotic translation lengths. When the surface $S$ is a torus, we relate the dynamics of the action of a homeomorphism on $\mathcal{C}^\dagger(S)$ to the dynamics of its action on the torus via the classical theory of rotation sets. We characterize homeomorphisms acting hyperbolically, show asymptotic translation length provides a lower bound for the area of the rotation set, and, while no characterisation purely in terms of rotation sets is possible, we give sufficient conditions for elements to be elliptic or parabolic.

Dates et versions

hal-03407426 , version 1 (28-10-2021)

Identifiants

Citer

Emmanuel Militon, Jonathan Bowden, Sebastian Hensel, Kathryn Mann, Richard Webb. Rotation sets and actions on curves. 2021. ⟨hal-03407426⟩
14 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More