Turkish Journal of Mathematics
Abstract
In this work we study the suucture of some special normal subgroups of Hecke groups. Particwarly those of genus O and 1 are studied by means of the regwar map theory which has been a growing subject in recent years. As a nice application, we calcwate the total number of genus 1 normal subgroups for a given index.
DOI
-
Keywords
IIecke groups, Ievel, parabolic class number
First Page
143
Last Page
151
Recommended Citation
CANGÜL, İ. N (1997). About Some Normal Subgroups of Hecke Groups. Turkish Journal of Mathematics 21 (2): 143-151. https://doi.org/-
