Hyperbolic hydra

Noel Brady
University of Oklahoma, Norman, United States
- MathSciNet
- zbMATH Open
Will Dison
Bank of England, London, UK
- MathSciNet
- zbMATH Open
Timothy R. Riley
Cornell University, Ithaca, USA
- MathSciNet
- zbMATH Open

Abstract

We give examples of hyperbolic groups with finite rank free subgroups of huge (Ackermannian) distortion.

Noel Brady, Will Dison, Timothy R. Riley, Hyperbolic hydra. Groups Geom. Dyn. 7 (2013), no. 4, pp. 961–976