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math.GR2023
Finiteness of CAT(0) group actions
Nicola Cavallucci, Andrea Sambusetti
We prove some finiteness results for discrete isometry groups of uniformly packed CAT-spaces with uniformly bounded codiameter (up to group isomorphism), and for CAT$(…
math.GR2021
Finiteness Theorems for Gromov-Hyperbolic Spaces and Groups
Gérard Besson, Gilles Courtois, Sylvestre Gallot +1
In this article we prove that the set of torsion-free groups acting by isometries on a hyperbolic metric space whose entropy is bounded above and with a compact quotient is finite.…