A uniform tableau method for intuitionistic modal logics I

Studia Logica 53 (1):29 - 60 (1994)
We present tableau systems and sequent calculi for the intuitionistic analogues IK, ID, IT, IKB, IKDB, IB, IK4, IKD4, IS4, IKB4, IK5, IKD5, IK45, IKD45 and IS5 of the normal classical modal logics. We provide soundness and completeness theorems with respect to the models of intuitionistic logic enriched by a modal accessibility relation, as proposed by G. Fischer Servi. We then show the disjunction property for IK, ID, IT, IKB, IKDB, IB, IK4, IKD4, IS4, IKB4, IK5, IK45 and IS5. We also investigate the relationship of these logics with some other intuitionistic modal logics proposed in the literature
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References found in this work BETA
R. A. Bull (1965). A Modal Extension of Intuitionist Logic. Notre Dame Journal of Formal Logic 6 (2):142-146.
W. B. Ewald (1986). Intuitionistic Tense and Modal Logic. Journal of Symbolic Logic 51 (1):166-179.

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