Computational complexity of sentences over fields

  • Authors:
  • Shih Ping Tung

  • Affiliations:
  • Department of Applied Mathematics, Chung Yuan Christian University, Chung Li, Taiwan 32023, ROC

  • Venue:
  • Information and Computation
  • Year:
  • 2008

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Abstract

Hilbert's Irreducibility Theorem is applied to find the upper bounds of the time complexities of various decision problems in arithmetical sentences and the following results are proved:1.The decision problem of @?@? sentences over an algebraic number field is in P. 2.The decision problem of @?@? sentences over the collection of all fields with characteristic 0 is in P. 3.The decision problem of @?@? sentences over a function field with characteristic p is polynomial time reducible to the factorization of polynomials over Z"p. 4.The decision problem of @?@? sentences over the collection of all fields with characteristic p is polynomial time reducible to the factorization of polynomials over Z"p. 5.The decision problem of @?@? sentences over the collection of all fields is polynomial time reducible to the factorization of integers over Z and the factorization of polynomials over finite fields.