The fixed point property and unbounded sets in CAT(0) spaces

A concept of convergence in geodesic spaces

W. A. Kirk, Bancha Panyanak · Nonlinear Analysis · 2007 · 423 citations

Natural Sciences, Mathematics, Geometry +10

Nonexpansive iterations in hyperbolic spaces

Simeon Reich, Itai Shafrir · Nonlinear Analysis · 1990 · 392 citations

Natural Sciences, Mathematics, Dynamical Systems +7

Kirszbraun's Theorem and Metric Spaces of Bounded Curvature

Urs Lang, Viktor Schroeder · Geometric and Functional Analysis · 1997 · 125 citations

Natural Sciences, Mathematics, Geometry +11

Fixed point theorems in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si1.gif" overflow="scroll"><mml:mi mathvariant="double-struck">R</mml:mi></mml:math>-trees with applications to graph theory

W. A. Kirk · Topology and its Applications · 2005 · 115 citations

Natural Sciences, Computer Science, Mathematics +10

Uniform convexity of the hyperbolic metric and fixed points of holomorphic mappings in the Hilbert ball

K. Goebel, Tadeusz Sȩkowski, Adam Stachura · Nonlinear Analysis · 1980 · 87 citations

Natural Sciences, Geophysics, Computational Geometry +9