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ON THE REPRESENTATIONS OF A NUMBER AS THE SUM OF FOUR FIFTH POWERS

Published online by Cambridge University Press:  01 October 1999

JOEL M. WISDOM
JOEL M. WISDOM
Affiliation:
Department of Mathematics, University of Michigan, Ann Arbor, MI 48109-1109, USA; [email protected]
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Abstract

It is known from Vaughan and Wooley's work on Waring's problem that every sufficiently large natural number is the sum of at most 17 fifth powers [13]. It is also known that at least six fifth powers are required to be able to express every sufficiently large natural number as a sum of fifth powers (see, for instance, [5, Theorem 394]). The techniques of [13] allow one to show that almost all natural numbers are the sum of nine fifth powers. A problem of related interest is to obtain an upper bound for the number of representations of a number as a sum of a fixed number of powers. Let R(n) denote the number of representations of the natural number n as a sum of four fifth powers. In this paper, we establish a non-trivial upper bound for R(n), which is expressed in the following theorem.

Type
Notes and Papers
Information
Journal of the London Mathematical Society , Volume 60 , Issue 2 , October 1999 , pp. 399 - 419
Copyright
The London Mathematical Society 1999

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Footnotes

This material is based upon work supported under a National Science Foundation Graduate Research Fellowship.