Abstract
We consider a formal language whose logical syntax involves both modal and tense propositional operators, as well as sortal quantifiers, sortal identities and (second order) quantifiers over sortals. We construct an intensional semantics for the language and characterize a formal logical system which we prove to be sound and complete with respect to the semantics. Conceptualism is the philosophical background of the semantic system.
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Freund, M.A. A Two Dimensional Tense-modal Sortal Logic. J Philos Logic 36, 571–598 (2007). https://doi.org/10.1007/s10992-007-9050-6
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DOI: https://doi.org/10.1007/s10992-007-9050-6