Abstract
We claim that the reduction of Post's Correspondence Problem to the decision problem of a theory provides a useful tool for proving undecidability of first order theories given by an interpretation. The goal of this paper is to propose a framework for such reduction proofs. The method proposed is illustrated by proving the undecidability of the theory of a term algebra modulo AC and the theory of a partial lexicographic path ordering.
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Treinen, R. (1990). A new method for undecidability proofs of first order theories. In: Nori, K.V., Veni Madhavan, C.E. (eds) Foundations of Software Technology and Theoretical Computer Science. FSTTCS 1990. Lecture Notes in Computer Science, vol 472. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-53487-3_34
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DOI: https://doi.org/10.1007/3-540-53487-3_34
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