Counting Solutions to Equations in Many Variables over Finite Fields

  • Authors:
  • Alan G. B. Lauder

  • Affiliations:
  • Mathematical Institute, Oxford University, 24-29 St. Giles, Oxford OX1 3LB,, England

  • Venue:
  • Foundations of Computational Mathematics
  • Year:
  • 2004

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Abstract

We present a polynomial-time algorithm for computing the zeta function of a smooth projective hypersurface of degree d over a finite field of characteristic p, under the assumption that p is a suitably small odd prime and does not divide d. This improves significantly upon an earlier algorithm of the author and Wan which is only polynomial-time when the dimension is fixed.