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Geometry and Dynamics in Gromov Hyperbolic Metric Spaces
By David Simmons, Tushar Das, Mariusz Urbański
E ́ Ghys and P. de la Harpe, Espaces métriques hyperboliques (hyperbolic metric spaces), Sur les groupes hyperboliques d'aprés Mikhael ... M. Handel and L. Mosher, The free splitting complex of a free group, I: hyperbolicity, Geom.
Three-dimensional Geometry and Topology
By William P. Thurston
WILLIAM P AUTOR THURSTON, William P. Thurston Silvio Levy, Silvio Vieira Ferreira Levy. tangent cones , one for each simplex containing r ; the derivative dfr is linear when restricted to each tangent cone .
An Introduction to Geometric Topology
By Bruno Martelli
This book provides a self-contained introduction to the topology and geometry of surfaces and three-manifolds.
Elements of Asymptotic Geometry
By Sergei Buyalo, Viktor Schroeder
In the first part of this book, in analogy with the concepts of classical hyperbolic geometry, the authors provide a systematic account of the basic theory of Gromov hyperbolic spaces.