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A Riccati differential equation and free subgroup numbers for lifts of PSL2(Z) modulo prime powers |
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| Authors: | C. Krattenthaler T.W. Müller |
| Affiliation: | 1. Fakultät für Mathematik, Universität Wien, Oskar-Morgenstern-Platz 1, A-1090 Vienna, Austria;2. School of Mathematical Sciences, Queen Mary & Westfield College, University of London, Mile End Road, London E1 4NS, United Kingdom |
| Abstract: | |
| Keywords: | Polynomial recurrences Free subgroup numbers Inhomogeneous modular group Padé approximant Hypergeometric series |
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