Abstract
We present a geometric construction that yields completeness results for modal logics including K4, KD4, GL and GL n with respect to certain subspaces of the rational numbers. These completeness results are extended to the bimodal case with the universal modality.
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Lucero-Bryan, J. The d-Logic of the Rational Numbers: A Fruitful Construction. Stud Logica 97, 265–295 (2011). https://doi.org/10.1007/s11225-011-9305-7
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DOI: https://doi.org/10.1007/s11225-011-9305-7