English

Reversing Palindromic Enumeration in Rank Two Free Groups

Group Theory 2016-04-19 v4

Abstract

The Gilman-Maskit algorithm for determining the discreteness or non-discreteness of a two-generator subgroup of PSL2R\mathrm{PSL}_2\mathbb{R} terminates with a pair of generators that are Farey words. The Farey words are primitive words that are indexed by rational numbers and infinity. The E-words, primitive words with palindromic product forms, are also indexed by rational numbers and infinity. We show a modification of the Gilman-Maskit algorithm so that the stopping generators are E-words.

Keywords

Cite

@article{arxiv.1311.6358,
  title  = {Reversing Palindromic Enumeration in Rank Two Free Groups},
  author = {Andrew E. Silverio},
  journal= {arXiv preprint arXiv:1311.6358},
  year   = {2016}
}
R2 v1 2026-06-22T02:14:24.812Z