English

Groups with decidable word problem that do not embed in groups with decidable conjugacy problem

Group Theory 2019-12-02 v2 Logic

Abstract

We show the existence of finitely presented torsion-free groups with decidable word problem that cannot be embedded in any finitely generated group with decidable conjugacy problem. This answers a well-known question of Collins from the early 1970's.

Keywords

Cite

@article{arxiv.1708.09047,
  title  = {Groups with decidable word problem that do not embed in groups with decidable conjugacy problem},
  author = {Arman Darbinyan},
  journal= {arXiv preprint arXiv:1708.09047},
  year   = {2019}
}

Comments

significant revisions

R2 v1 2026-06-22T21:27:21.891Z