Abstract
Prior’s three-valued modal logic Q was developed as a philosophically interesting modal logic. Thus, we should be able to modify Q as a temporal logic. Although a temporal version of Q was suggested by Prior, the subject has not been fully explored in the literature. In this paper, we develop a three-valued temporal logic Q t and give its axiomatization and semantics. We also argue that Q t provides a smooth solution to the problem of future contingents.
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Akama, S., Nagata, Y. & Yamada, C. Three-Valued Temporal Logic Q t and Future Contingents. Stud Logica 88, 215–231 (2008). https://doi.org/10.1007/s11225-008-9102-0
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DOI: https://doi.org/10.1007/s11225-008-9102-0