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Nonfinite axiomatizability results for cylindric and relation algebras

Published online by Cambridge University Press:  12 March 2014

Roger D. Maddux*
Affiliation:
Department of Mathematics, Iowa State University, AMES, Iowa 50011

Abstract

The set of equations which use only one variable and hold in all representable relation algebras cannot be derived from any finite set of equations true in all representable relation algebras. Similar results hold for cylindric algebras and for logic with finitely many variables. The main tools are a construction of nonrepresentable one-generated relation algebras, a method for obtaining cylindric algebras from relation algebras, and the use of relation algebras in defining algebraic semantics for first-order logic.

Type
Research Article
Copyright
Copyright © Association for Symbolic Logic 1989

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