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Showing 1 to 2 of 2 for “"comparative possibility"”.
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An essay in natural modal logic
… comparison frames. Conditional logics of various comparative notions, for example, Lewis's V-logic of comparative possibility and utilitarian accounts of conditional obligation, model the dyadic modal operator > on comparison frames according to (what amounts to) the following truth condition: …
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Counterfactual Logic: A Modern Overview
… additional connectives for reasoning about comparative possibility statements and modalities. Moreover, Lewis described a possible world semantics involving a ``sphere system'' that effectively lets you talk about some worlds being more ``similar'' to a given world than others. The resulting …