English

Free and Hyperbolic Groups are not Equational

Logic 2012-04-24 v1 Group Theory

Abstract

We give an example of a definable set in every free or torsion-free (non-elementary) hyperbolic group that is not in the Boolean algebra of equational sets. Hence, the theories of free and torsion-free (non-elementary) hyperbolic groups are not equational in the sense of G. Srour.

Keywords

Cite

@article{arxiv.1204.5075,
  title  = {Free and Hyperbolic Groups are not Equational},
  author = {Z. Sela},
  journal= {arXiv preprint arXiv:1204.5075},
  year   = {2012}
}
R2 v1 2026-06-21T20:53:29.966Z