Groups commensurable with the modular group.

DOI10.1016/S0021-8693(03)00421-6zbMath1068.20050MaRDI QIDQ1883018

Mong-Lung Lang

Publication date: 1 October 2004

Published in: Journal of Algebra (Search for Journal in Brave)

zbMATH Keywords

maximal subgroupsHecke groupssubgroups of finite indexmodular groupcommensurability

Mathematics Subject Classification ID

Subgroup theorems; subgroup growth (20E07) Maximal subgroups (20E28) Unimodular groups, congruence subgroups (group-theoretic aspects) (20H05)

Related Items (2)

The Group Structure of the Normalizer of Γ₀(N) After Atkin–Lehner ⋮ On Thompson's finiteness theorem.

Cites Work

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• Arithmétique des algèbres de quaternions
• Normalisers of subgroups of the modular group
• Bestimmung der Kommensurabilitätsklasse der Hilbertschen Modulgruppe
• Hecke operators on \(\Gamma_0(m)\)
• The normalizer of Γ₀(N) in PSL(2, ℝ)

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