Abstract
We formalise the notion of negative facts due to Russell in terms of the logic of constructible falsity. We generalise Fraassen's theory of facts so that we can deal with a positive fact as a true proposition and a negative fact as a false proposition in a constructive manner. We provide some adequacy results for the revised van Fraassen semantics with respect to several versions of Kripke semantics for constructible falsity.
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More From: International Journal of Reasoning-based Intelligent Systems
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