On non-congruence subgroups of the analogue of the modular group in characteristic \(p\).

DOI10.1023/A:1026239010853zbMath1037.20052MaRDI QIDQ1417926

Alexander W. Mason

Publication date: 6 January 2004

Published in: The Ramanujan Journal (Search for Journal in Brave)

zbMATH Keywords

minimal indexpolynomial ringsspecial linear groupsnon-congruence subgroupscongruece subgroups

Mathematics Subject Classification ID

Unimodular groups, congruence subgroups (group-theoretic aspects) (20H05) Structure of modular groups and generalizations; arithmetic groups (11F06) Fuchsian groups and their generalizations (group-theoretic aspects) (20H10)

Related Items (2)

Genuine non-congruence subgroups of Drinfeld modular groups ⋮ Non-standard automorphisms and non-congruence subgroups of \(\mathrm{SL}_{2}\) over Dedekind domains contained in function fields

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