Hybrid logics with Sahlqvist axioms

Logic Journal of the IGPL 13 (3):293-300 (2005)
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Abstract

We show that every extension of the basic hybrid logic with modal Sahlqvist axioms is complete. As a corollary of our approach, we also obtain the Beth property for a large class of hybrid logics. Finally, we show that the new completeness result cannot be combined with the existing general completeness result for pure axioms

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