A note on subgroups of the modular group
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- by Marvin Isadore Knopp PDF
- Proc. Amer. Math. Soc. 14 (1963), 95-97 Request permission
References
- J. L. Brenner, The linear homogeneous group. III, Ann. of Math. (2) 71 (1960), 210–223. MR 110754, DOI 10.2307/1970082 F. Klein and R. Fricke, Vorlesungen über die Theorie der elliptischen Modulfunktionen, Vol. 1, Teubner, Leipzig, 1890-1892.
- Marvin Isadore Knopp, Construction of a class of modular functions and forms. II, Pacific J. Math. 11 (1961), 661–678. MR 130229
- Irving Reiner, Subgroups of the unimodular group, Proc. Amer. Math. Soc. 12 (1961), 173–174. MR 120287, DOI 10.1090/S0002-9939-1961-0120287-8
Additional Information
- © Copyright 1963 American Mathematical Society
- Journal: Proc. Amer. Math. Soc. 14 (1963), 95-97
- MSC: Primary 10.21; Secondary 20.65
- DOI: https://doi.org/10.1090/S0002-9939-1963-0142661-8
- MathSciNet review: 0142661