On Divisibility of Exponential Sums over Finite Fields of Characteristic 2

  • F. N. Castro
  • O. Moreno


Moreno-Moreno’s result and the covering method give estimates on the 2-divisibility of the number of solutions of a system of polynomial equations. Let us call μ the order of the 2-divisibility given by Moreno-Moreno’s result and μ′ that of the covering method. In 2000 we proved that μ′ ≥ μ. In this present paper we give general conditions under which μ′ > μ. We also give some results concerning the tightness of the covering method.


Boolean Function Polynomial Equation Finite Field Code Theory Covering Method 
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© Springer-Verlag Berlin Heidelberg 2002

Authors and Affiliations

  • F. N. Castro
    • 1
  • O. Moreno
    • 1
  1. 1.Department of MathematicsUniversity of Puerto RicoSJPR

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