Commutator subgroup of the Hecke group $G_5$ is not congruence
Group Theory
2014-01-17 v2
Abstract
We prove that the power subgroup and the commutator subgroup of the Hecke group are not congruence.
Cite
@article{arxiv.1401.1567,
title = {Commutator subgroup of the Hecke group $G_5$ is not congruence},
author = {Cheng Lien Lang and Mong Lung Lang},
journal= {arXiv preprint arXiv:1401.1567},
year = {2014}
}
Comments
Lemmas 3.5-3.7 are removed as they are not used in the proof of Prop. 5.2. arXiv admin note: text overlap with arXiv:1401.0775