Combinatoire des Sous-Groupes de Congruence du Groupe Modulaire II
Combinatorics
2022-06-29 v4
Abstract
In this paper, we study combinatorics of congruence subgroups of the modular group. More precisely, we consider the matrix equation that naturally arises in the theory of Coxeter friezes and investigate its irreducible solutions. We give new properties for minimal monomial solutions. Furthermore, we introduce the notion of minimal dynomial solutions and study their irreducibility.
Keywords
Cite
@article{arxiv.2105.11719,
title = {Combinatoire des Sous-Groupes de Congruence du Groupe Modulaire II},
author = {Flavien Mabilat},
journal= {arXiv preprint arXiv:2105.11719},
year = {2022}
}
Comments
in French language. To appear in Annales Math{\'e}matiques Blaise Pascal