Chapter

Modal basics

Brian Leftow

in God and Necessity

Published in print September 2012 | ISBN: 9780199263356
Published online January 2013 | e-ISBN: 9780191741777 | DOI: http://dx.doi.org/10.1093/acprof:oso/9780199263356.003.0002
Modal basics

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This chapter introduces basic concepts related to modality that occur throughout the book. It discusses kinds of necessity and possibility — particularly narrow and broad logical modalities. It introduces the concept of a possible world, and the different types of theory of possible worlds, as well as (briefly) the standard formal modal semantics. It also introduces some systems of modal logic and the notion of a counterfactual conditional.

Keywords: modality; necessity; possibility; possible world; logical modalities; modal semantics; counterfactual

Chapter.  9129 words. 

Subjects: Philosophy of Religion

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