2018
DOI: 10.48550/arxiv.1803.03003
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An interpolant in predicate Gödel logic

Matthias Baaz,
Mai Gehrke,
Sam van Gool

Abstract: A logic satisfies the interpolation property provided that whenever a formula ∆ is a consequence of another formula Γ, then this is witnessed by a formula Θ which only refers to the language common to Γ and ∆. That is, the relational (and functional) symbols occurring in Θ occur in both Γ and ∆, Γ has Θ as a consequence, and Θ has ∆ as a consequence. Both classical and intuitionistic predicate logic have the interpolation property, but it is a long open problem which intermediate predicate logics enjoy it. In … Show more

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“…The Craig interpolation property is an open problem for first-order Gödel logic [1]. In [2], the author expresses an approximate version of the Craig interpolation property for Pavelka-style Gödel logic, RGL* (which is called rational Gödel logic).…”
Section: Introductionmentioning
confidence: 99%
“…The Craig interpolation property is an open problem for first-order Gödel logic [1]. In [2], the author expresses an approximate version of the Craig interpolation property for Pavelka-style Gödel logic, RGL* (which is called rational Gödel logic).…”
Section: Introductionmentioning
confidence: 99%