Fundamenta Informaticae - Special issue: logics for artificial intelligence
Fundamenta Informaticae - Special issue on modal logics in knowledge representation
Analytic Calculi for Projective Logics
TABLEAUX '99 Proceedings of the International Conference on Automated Reasoning with Analytic Tableaux and Related Methods
A formal fuzzy reasoning system and reasoning mechanism based on propositional modal logic
Theoretical Computer Science
Proof Theory for Fuzzy Logics
Reasoning within fuzzy description logics
Journal of Artificial Intelligence Research
Making fuzzy description logic more general
Fuzzy Sets and Systems
Reasoning and inference rules in basic linear temporal logic BLTL
KES'10 Proceedings of the 14th international conference on Knowledge-based and intelligent information and engineering systems: Part II
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A basic propositional modal fuzzy logic ${\sf {GK}}_{\Box}$ is defined by combining the Kripke semantics of the modal logic K with the many-valued semantics of Gödel logic G. A sequent of relations calculus is introduced for ${\sf {GK}}_{\Box}$ and a constructive counter-model completeness proof is given. This calculus is used to establish completeness for a Hilbert-style axiomatization and Gentzen-style hypersequent calculus admitting cut-elimination, and to show that the logic is PSPACE-complete.