A shallow sequent calculus for FIK is introduced, shown cut-admissible, and used to prove EXPSPACE decidability, improving on the non-elementary conjecture for IK.
Fischer Servi (1980): Semantics for a Class of Intuitionistic Modal Calculi
2 Pith papers cite this work. Polarity classification is still indexing.
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cs.LO 2years
2026 2representative citing papers
Introduces constructive neighbourhood semantics and an adapted structured calculus for intuitionistic monotone modal logic IM, proving decidability and noting analogies to classical variants of M and K.
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Intuitionistic Monotone Modal Logic: Proof Theory and Semantics
Introduces constructive neighbourhood semantics and an adapted structured calculus for intuitionistic monotone modal logic IM, proving decidability and noting analogies to classical variants of M and K.