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Principal Congruence Subgroups of Hecke Groups( H{left( {{sqrt q }} ight)} )

✍ Scribed by Nihal Yilmaz Özgür

Publisher
Institute of Mathematics, Chinese Academy of Sciences and Chinese Mathematical Society
Year
2005
Tongue
English
Weight
203 KB
Volume
22
Category
Article
ISSN
1439-7617

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Principal Congruence Subgroups of the He
Principal Congruence Subgroups of the Hecke Groups
✍ Mong-Lung Lang; Chong-Hai Lim; Ser-Peow Tan 📂 Article 📅 2000 🏛 Elsevier Science 🌐 English ⚖ 126 KB

Let q be an odd integer >3 and let G q be the Hecke group associated to q. Let ({) be a prime ideal of Z[\* q ] and G(q, {) the principal congruence subgroup of G q associated to {. We give a formula for [G q : G(q, {)], the index of the principal congruence subgroup G(q, {) in G q . We also give fo