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On Applications of Roots of Unity to Product Identities

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Book cover Partitions, q-Series, and Modular Forms

Part of the book series: Developments in Mathematics ((DEVM,volume 23))

Abstract

In this paper, we give simple proofs of the quintuple product identity and the septuple product identity using properties of cube and fifth roots of unity.

Mathematics Subject Classification:Primary: 05A30; Secondary: 33D15, 14K25

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References

  1. B. C. Berndt, Ramanujan’s Notebooks, Part III, Springer, New York, 1991.

    Book  MATH  Google Scholar 

  2. B. C. Berndt, Number Theory in the Spirit of Ramanujan, American Mathematical Society, Providence, RI, 2006.

    MATH  Google Scholar 

  3. Z. Cao, Integer matrix exact covering systems and product identities for theta functions, accepted-1pc]Please update reference [3]. by Int. Math. Res. Not.

    Google Scholar 

  4. S. Cooper, The quintuple product identity, Int. J. Number Theory. 2 (2006), no. 1, 115–161.

    Article  MathSciNet  MATH  Google Scholar 

  5. H. M. Farkas and I. Kra, On the quintuple product identity, Proc. Amer. Math. Soc. 127 (1999), no. 3, 771–778.

    Article  MathSciNet  MATH  Google Scholar 

  6. D. Foata, and G.-N. Han, The triple, quintuple and septuple product identities revisited, in The Andrews Festschrift: Seventeen Papers on Classical Number Theory and Combinatorics, D. Foata, and G.-N. Han, eds., Springer, New York, 2001, 323–334.

    Google Scholar 

  7. F. G. Garvan, A generalization of the Hirschhorn-Farkas-Kra septagonal numbers identity, Disc. Math. 232 (2001), 113–118.

    Article  MathSciNet  MATH  Google Scholar 

  8. G. H. Hardy and E. M. Wright, An Introduction to the Theory of Numbers, 5th edn., Clarendon Press, Oxford, 1989.

    Google Scholar 

  9. M. D. Hirschhorn, A simple proof of an identity of Ramanujan, J. Austral. Math. Soc. Ser. A 34 (1983), 31–35.

    Google Scholar 

  10. S. Kongsiriwong and Z.-G. Liu, Uniform proofs of q-series-product identities, Results Math. 44 (2003), 312–339.

    MathSciNet  MATH  Google Scholar 

  11. S. Ramanujan, The Lost Notebook and Other Unpublished Papers, Narosa, New Delhi, 1988.

    MATH  Google Scholar 

  12. G. N. Watson, Theorems stated by Ramanujan (VII): theorems on continued fractions, J. London Math. Soc. 4 (1929), 231–237.

    Article  MATH  Google Scholar 

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Correspondence to Zhu Cao .

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Cao, Z. (2012). On Applications of Roots of Unity to Product Identities. In: Alladi, K., Garvan, F. (eds) Partitions, q-Series, and Modular Forms. Developments in Mathematics, vol 23. Springer, New York, NY. https://doi.org/10.1007/978-1-4614-0028-8_5

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