Finite subgroups of the extended modular group
نویسندگان
چکیده
منابع مشابه
Squares of Congruence Subgroups of the Extended Modular Group
In this paper, we generalize some results related to the congruence subgroups of modular group ; given in [7] and [6] by Kiming, Schütt, and Verrill, to the extended modular group ̆: 2010 Mathematics Subject Classification: 11F06
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Classically, congruence subgroups of the modular group, which can be described by congruence relations, play important roles in group theory and modular forms. In reality, the majority of finite index subgroups of the modular group are noncongruence. These groups as well as their modular forms are central players of this survey article. Differences between congruence and noncongruence subgroups...
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ژورنال
عنوان ژورنال: Rocky Mountain Journal of Mathematics
سال: 2019
ISSN: 0035-7596
DOI: 10.1216/rmj-2019-49-4-1123