Counterpart Semantics at work: An Incompleteness Result in Quantified Modal Logic
نویسنده
چکیده
In this paper we make use of counterpart semantics to prove an original incompleteness result in quantified modal logic (QML), that is, the system QE .K+BF based on free logic and containing the Barcan formula is incomplete with respect to Kripke semantics. This incompleteness result extends to the system QE .K+CBF+BF obtained by adding the converse of the Barcan formula to QE .K+BF .
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تاریخ انتشار 2008