Parity patterns associated with lifts of Hecke groups.

DOI10.1007/s12188-008-0008-6zbMath1184.20025arXiv0803.4175OpenAlexW1981040623MaRDI QIDQ1032511

Thomas W. Müller, Christian Krattenthaler

Publication date: 26 October 2009

Published in: Abhandlungen aus dem Mathematischen Seminar der Universität Hamburg (Search for Journal in Brave)

Full work available at URL: https://arxiv.org/abs/0803.4175

zbMATH Keywords

Hecke groupssubgroups of finite indexfree productshomomorphismssubgroup growthnumbers of subgroupscoset diagramsparity patternssubgroup numbers

Mathematics Subject Classification ID

Exact enumeration problems, generating functions (05A15) Subgroup theorems; subgroup growth (20E07) Automorphisms of infinite groups (20E36) Free products of groups, free products with amalgamation, Higman-Neumann-Neumann extensions, and generalizations (20E06)

Related Items (3)

SUBGROUPS OF FINITE INDEX IN (2, 3, n)-TRIANGLE GROUPS ⋮ A Riccati differential equation and free subgroup numbers for lifts of \(\mathrm{PSL}_2(\mathbb Z)\) modulo prime powers ⋮ Truncated versions of Dwork's lemma for exponentials of power series and \(p\)-divisibility of arithmetic functions

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