English

Dominating CAT(-1) surface group representations by Fuchsian ones

Geometric Topology 2020-11-11 v1 Metric Geometry

Abstract

We show that for every representation ρ:π1(Sg)Isom(X) \rho : \pi_{1} (S_{g}) \to \text{Isom}(X) of the fundamental group of a genus g2 g \ge 2 surface to the isometry group of a complete CAT(1) \text{CAT}(-1) metric space X X there exists a Fuchsian representation j j and a (j,ρ) (j, \rho) -equivariant map from H2 \mathbb{H}^{2} to X X which is c c -Lipschitz for some c<1 c < 1 , or ρ \rho restricts to a Fuchsian representation. This generalizes results of Gueritaud-Kassel-Wolff, Deroin-Tholozan and Daskalopoulos-Mese-Sanders-Vdovina

Keywords

Cite

@article{arxiv.2011.03954,
  title  = {Dominating CAT(-1) surface group representations by Fuchsian ones},
  author = {Florestan Martin-Baillon},
  journal= {arXiv preprint arXiv:2011.03954},
  year   = {2020}
}
R2 v1 2026-06-23T19:59:26.242Z