A Riccati differential equation and free subgroup numbers for lifts of \(\mathrm{PSL}_2(\mathbb Z)\) modulo prime powers
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Publication:388726
DOI10.1016/j.jcta.2013.08.002zbMath1278.05016arXiv1211.2947OpenAlexW2018142683WikidataQ114162740 ScholiaQ114162740MaRDI QIDQ388726
Thomas W. Müller, Christian Krattenthaler
Publication date: 6 January 2014
Published in: Journal of Combinatorial Theory. Series A (Search for Journal in Brave)
Full work available at URL: https://arxiv.org/abs/1211.2947
hypergeometric seriesPadé approximantfree subgroup numbersinhomogeneous modular grouppolynomial recurrences
Exact enumeration problems, generating functions (05A15) Subgroup theorems; subgroup growth (20E07) Congruences; primitive roots; residue systems (11A07)
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