English

Fibonacci groups, F(2,n), are hyperbolic for n odd and n >= 11

Group Theory 2020-05-22 v1 Combinatorics

Abstract

We prove that the Fibonacci group, F(2,n), for n odd and n >= 11 is hyperbolic. We do this by applying a curvature argument to an arbitrary van Kampen diagram of F(2,n) and show that it satisfies a linear isoperimetric inequality. It then follows that F(2, n) is hyperbolic.

Keywords

Cite

@article{arxiv.2005.10653,
  title  = {Fibonacci groups, F(2,n), are hyperbolic for n odd and n >= 11},
  author = {Christopher Chalk},
  journal= {arXiv preprint arXiv:2005.10653},
  year   = {2020}
}