aequationes mathematicae

, Volume 18, Issue 1–2, pp 333–337 | Cite as

A simple proof of Ramanujan’s summation of the1ψ1

  • George E. Andrews
  • Richard Askey
Article

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.

Keywords

Primary 33A25 33A30 

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References

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Copyright information

© Birkhäuser-Verlag 1978

Authors and Affiliations

  • George E. Andrews
    • 1
    • 2
  • Richard Askey
    • 1
    • 2
  1. 1.Pennsylvania State UniversityUniversity ParkUSA
  2. 2.University of WisconsinMadisonUSA

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