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Quantified propositional Gödel logics

Source

Voronkov, Andrei, and Michel Parigot (eds.) Logic for Programming and Automated Reasoning. 7th International Conference, LPAR 2000. Proceedings, LNAI 1955 (Springer, Berlin, 2000) 240-256
(with Matthias Baaz and Agata Ciabattoni)

Abstract

It is shown that G^, the quantified propositional Gödel logic based on the truth-values set V^ = {1 - 1/n : n = 1, 2, . . .} u {1}, is decidable. This result is obtained by reduction to Büchi's theory S1S. An alternative proof based on elimination of quantifiers is also given, which yields both an axiomatization and a characterization of G^ as the intersection of all finite-valued quantified propositional Gödel logics.

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