Skip to main content
Log in

A simple proof of Ramanujan’s summation of the1ψ1

  • Published:
aequationes mathematicae Aims and scope Submit manuscript

Abstract

A simple proof by functional equations is given for Ramanujan’s1 ψ 1 sum. Ramanujan’s sum is a useful extension of Jacobi's triple product formula, and has recently become important in the treatment of certain orthogonal polynomials defined by basic hypergeometric series.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Similar content being viewed by others

References

  1. Andrews, G. E.,On Ramanujan's summation of 1ψ1(a;b;z). Proc. Amer. Math. Soc.22 (1969), 552–553.

    Article  MATH  MathSciNet  Google Scholar 

  2. Andrews, G. E.,On a transformation of bilateral series with applications. Proc. Amer. Math. Soc.25 (1970), 554–558.

    Article  MATH  MathSciNet  Google Scholar 

  3. Andrews, G. E. andAskey, R.,The classical and discrete orthogonal polynomials and their q-analogues. To appear.

  4. Hahn, W.,Beiträge zur Theorie der Heineschen Reihen. Math. Nach.2 (1949), 340–379.

    Article  MATH  Google Scholar 

  5. Hardy, G. H.,Ramanujan. Cambridge University Press, Cambridge, 1940. Reprinted: Chelsea, New York.

    Google Scholar 

  6. Ismail, M.,A simple proof of Ramanulan's 1ψ1 sum. Proc. Amer. Math. Soc.,63 (1977), 185–186.

    Article  MATH  MathSciNet  Google Scholar 

  7. Jackson, M.,On Lerch's transcendant and the basic bilateral hypergeometric series 2ψ2. J. London Math. Soc25 (1950), 189–196.

    Article  MATH  MathSciNet  Google Scholar 

  8. Karlin, S.,Total Positivity, Volume One. Stanford University Press, Stanford, 1968.

    MATH  Google Scholar 

  9. Schoenberg, I. J.,Some analytical aspects of the problem of smoothing. Studies and Essays presented to R. Courant on his 60th Birthday, Interscience Publishers, New York, 1948, 351–370.

    Google Scholar 

  10. Slater, L. J.,Generalized hypergeometric functions. Cambridge University Press, Cambridge 1966.

    MATH  Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Additional information

The work of the first author was partially sponsored by the United States Army under Contract No. DAAG29-75-C-0024 and NSF Grant 74-07282 and that of the second author was partially supported by NSF Grant MPS 75-06687 AO2.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Andrews, G.E., Askey, R. A simple proof of Ramanujan’s summation of the1ψ1 . Aeq. Math. 18, 333–337 (1978). https://doi.org/10.1007/BF03031684

Download citation

  • Received:

  • Accepted:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF03031684

Keywords

Navigation