English

The Reidemeister spectrum of low dimensional almost-crystallographic groups

Group Theory 2025-10-14 v2

Abstract

We determine which non-crystallographic, almost-crystallographic groups of dimension 4 have the RR_\infty-property. We then calculate the Reidemeister spectra of the 3-dimensional almost-crystallographic groups and the 4-dimensional almost-Bieberbach groups.

Keywords

Cite

@article{arxiv.1901.05393,
  title  = {The Reidemeister spectrum of low dimensional almost-crystallographic groups},
  author = {Sam Tertooy},
  journal= {arXiv preprint arXiv:1901.05393},
  year   = {2025}
}