English

Upper bounds on the number of conjugacy classes in unitriangular groups

Group Theory 2015-04-01 v2

Abstract

We provide a new upper bound on the number of conjugacy classes in the group Un(q)U_n(q) of unitriangular matrices over a finite field. We also compute a similar upper bound for every group in the lower central series of Un(q)U_n(q).

Keywords

Cite

@article{arxiv.1411.5389,
  title  = {Upper bounds on the number of conjugacy classes in unitriangular groups},
  author = {Andrew Soffer},
  journal= {arXiv preprint arXiv:1411.5389},
  year   = {2015}
}

Comments

26 pages; v2 -- Major rewrite, including improved upper bounds and expanded exposition

R2 v1 2026-06-22T07:05:14.217Z