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Computations and generalizations on a remark of Ramanujan

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Abstract

In a conversation with Ramanujan, G.H. Hardy mentioned that 1729 seemed to be a dull number. Ramanujan answered, “No, it is a very interesting number; it is the smallest number expressible as a sum of two cubes in two different ways.” He also stated that the answer to the corresponding problem for fourth powers “... must be very large.” In this paper, this problem and other generalizations to higher powers and larger sums is examined.

In particular, the computational results of Lander, Parkin and Selfridge (“... Equal Sums of Like Powers”) are extended.

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References

  1. E.T. Bell, , McGraw-Hill, New York, 1945.

  2. S. Brudno, “Triples of Sixth Powers With Equal Sums,” 30 (1976), 646–648.

  3. L.E. Dickson, , Carnegie Institute of Washington, Washington, D.C., 1920.

  4. T. Estermann, , Cambridge Tract No. 41, Cambridge University Press, London, 1961.

  5. G.H. Hardy and E.M. Wright, Oxford University Press, London, 1960.

  6. L.J. Lander and T.R. Parkin, “A Counterexample to Euler's Sum of Powers Conjecture,” 21 (1967), 101–103.

  7. L.J. Lander, T.R. Parkin and J.L. Selfridge, “A Survey of Equal Sums of Like Powers,” 21 (1967), 446–459.

  8. J.R. Newman, , Simon and Schuster, New York, 1956.

  9. K.S. Rao, “On Sums of Sixth Powers,” 9 (1934), 172–173.

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Authors and Affiliations

  1. Department of Computer Science, University of Kentucky, Kentucky, USA

    Ronald Alter

Authors
  1. Ronald Alter

Editor information

Marvin I. Knopp

Additional information

This paper is dedicated to my teacher, Professor Emil Grosswald, in honor of his sixty-eighth birthday.

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Cite this paper

Alter, R. (1981). Computations and generalizations on a remark of Ramanujan. In: Knopp, M.I. (eds) Analytic Number Theory. Lecture Notes in Mathematics, vol 899. Springer, Berlin, Heidelberg. https://doi.org/10.1007/BFb0096461

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  • DOI: https://doi.org/10.1007/BFb0096461

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  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-540-11173-3

  • Online ISBN: 978-3-540-38953-8

  • eBook Packages: Springer Book Archive

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