Syntax vs. semantics on finite structures

  • Natasha Alechina
  • Yuri Gurevich
Model Theory
Part of the Lecture Notes in Computer Science book series (LNCS, volume 1261)

Abstract

Logic preservation theorems often have the form of a syntax/semantics correspondence. For example, the Los-Tarski theorem asserts that a first-order sentence is preserved by extensions if and only if it is equivalent to an existential sentence. Many of these correspondences break when one restricts attention to finite models. In such a case, one may attempt to find a new semantical characterization of the old syntactical property or a new syntactical characterization of the old semantical property. The goal of this paper is to provoke such a study.

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Copyright information

© Springer-Verlag 1997

Authors and Affiliations

  • Natasha Alechina
    • 1
  • Yuri Gurevich
    • 2
  1. 1.University of BirminghamUK
  2. 2.University of MichiganUSA

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