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modal logic

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noun
the logical study of such philosophical concepts as necessity, possibility, contingency, etc
the logical study of concepts whose formal properties resemble certain moral, epistemological, and psychological conceptsSee also alethic, deontic, epistemic, doxastic
any formal system capable of being interpreted as a model for the behaviour of such concepts
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

How to use modal logic in a sentence

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