Abstract
We prove some theta-function identities for a continued fraction M(q) of Ramanujan. Then these identities are used to prove modular identities connecting M(q) and \(M(q^n)\) for \(n=\) 2, 3, 5, and 7. We also offer general theorems and reciprocity formula for the explicit evaluation of M(q).
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Baruah, N.D., Saikia, N.: Modular equations and explicit values of Ramanujan-Selberg continued fraction, Int. J. Math. Math. Sci. 2006, 1–15 (2006) Article ID 54901
Baruah, N.D., Saikia, N.: Explicit evaluations of Ramanujan-Göllnitz-Gordon continued fraction. Monatsh. Math. 154, 271–288 (2008)
Baruah, N.D., Berndt, B.C.: Partition identities arising from theta function identities. Acta Math. Sin. English Ser. 24(6), 955–970 (2008)
Baruah, N.D., Bora, J., Saikia, N.: Some new proofs of modular relations for the Göllnitz-Gordon functions. Ramanujan J. 15, 281–301 (2008)
Berndt, B.C.: Ramanujan’s Notebooks, Part III. Springer-Verlag, New York (1991)
Berndt, B.C.: Ramanujan’s Notebooks, Part V. Springer-Verlag, New York (1998)
Berndt, B.C.: Flowers which we cannot yet see growing in Ramanujan’s garden of hypergeometeric series, elliptic functions, and \(q^{\prime }s\). In: Bustoz, J., Ismail, M.E.H., Suslov, S.K. (eds.) Special Functions 2000: Current Perspective and Future Directions, pp. 61–85. Kluwer, Dordrecht (2001)
Ramanujan, S.: Notebooks (2 volumes). Tata Institute of Fundamental Research, Bombay (1957)
Ramanujan, S.: The Lost Notebook and Other Unpublished Papers. Narosa, New Delhi (1988)
Saikia, N.: Some \(q\)-continued fractions of Ramanujan, their explicit values, and equalities. Afr. Mat. 26, 1359–1370 (2015)
Saikia, N.: Some new explicit values of Ramanujan–Selberg continued fraction (submitted)
Yi, J.: Theta-function identities and the explicit formulas for theta-function and their applications. J. Math. Anal. Appl. 292, 381–400 (2004)
Yi, J.: Construction and Application of Modular Equations, Ph. D. Thesis, University of Illinois at Urbana Champaign (2004)
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Saikia, N. Some new identities for a continued fraction of Ramanujan. Ann Univ Ferrara 62, 151–164 (2016). https://doi.org/10.1007/s11565-016-0239-x
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DOI: https://doi.org/10.1007/s11565-016-0239-x