### 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.

Original language | English |
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Pages (from-to) | 317 - 342 |

Number of pages | 26 |

Journal | Journal of the London Mathematical Society |

Volume | 82, number 2 |

DOIs | |

Publication status | Published - Jul 2010 |

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## Cite this

Salberger, P., & Wooley, TD. (2010). Rational points on complete intersections of higher degree, and mean values of Weyl sums.

*Journal of the London Mathematical Society*,*82, number 2*, 317 - 342. https://doi.org/10.1112/jlms/jdq027