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Title: A Non-Classical Refinement of the Interpolation Property for Classical Propositional Logic
Author(s): MILNE, Peter
Journal: Logique et Analyse
Volume: 235    Date: 2016   
Pages: 273-281
DOI: 10.2143/LEA.235.0.3170109

Abstract :
We refine the interpolation property of the {˄, ˅, ¬}-fragment of classical propositional logic, showing that if ⊭ ¬φ, ⊭ ψ and φψ then there is an interpolant χ, constructed using at most atomic formulas occurring in both φ and ψ and negation, conjunction and disjunction, such that (i) φ entails χ in Kleene’s strong three-valued logic and (ii) χ entails ψ in Priest’s Logic of Paradox.

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