possible world

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possible world

n
(Logic) logic (in modal logic) a semantic device formalizing the notion of what the world might have been like. A statement is necessarily true if and only if it is true in every possible world
References in periodicals archive ?
However, this paper proves that it follows from Lewis's possible world semantics for counterfactuals, in particular his Centring condition, that all nonmodal facts supervene on counterfactuals.
Bryan Frances concentrates on two areas only: Kripke's challenge to the Fregean paradigm (regarding meaning and reference), and his work on the metaphysics of meaning; he also briefly mentions Kripke's theses regarding names and possible world semantics, and his reading of Wittgenstein's Philosophical Investigations.
A good illustration of this is the discussion of possible world semantics and Montague's treatment of intensions in Chapter 10.
In Brandom's story, the overthrow of Quineanism waits on the work of David Lewis whose possible world semantics yields the modal logic that Quine would not sanction.