Abstract

Hybrid logics were proposed in [15] as a way of boosting the expressivity of modal logics via a novel mechanism: adding labels for states in Kripke models and viewing these labels as formulae. In addition, hybrid logics may contain quantifiers to bind the labels. Thus, hybrid logics have both Kripke semantics and a first-order binding apparatus. We present prefixed tableau calculi for weak hybrid logics (proper fragments of classical logic) as well as for hybrid logics having full first-order expressive power, and give a general method for proving completeness. For the weak quantifier-free logics we present a tableau-based decision procedure.KeywordsModal LogicAccessibility RelationKripke ModelHybrid LogicProof ProcedureThese keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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