- PUBLICACIONS MATEMATIQUES Journal
- June 2009
International Standard Serial Number (ISSN)
- In this paper we show that, in order to check Gromov hyperbolicity of any surface with curvature K < −k2 < 0, we just need to verify the Rips condition on a very small class of triangles, namely, those contained in simple closed geodesics. This result is, in fact, a new characterization of Gromov hyperbolicity for this kind of surfaces.