Chapter

Molecular Propositions

Alexander Broadie

in Introduction to Medieval Logic

Second edition

Published in print April 1993 | ISBN: 9780198240266
Published online October 2011 | e-ISBN: 9780191680137 | DOI: http://dx.doi.org/10.1093/acprof:oso/9780198240266.003.0004
Molecular Propositions

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There was little agreement on the question of how many kinds of molecular propositions there are. A molecular proposition is one containing several categorical propositions. Such a proposition also contains, whether explicitly or implicitly, a connective (often called a copula), or even several connectives if the connective after which the particular molecular proposition takes its name connects propositions of which at least one is also molecular. A molecular proposition was said to be simple if it contained just two categorical propositions, and composite if at least one of the propositions connected by the principal connective was itself molecular. While ‘and’, ‘or’, and ‘if’ were the most commonly investigated propositional connectives, each one of these terms was also examined in respect of its role as a connective between categorematic terms as well as between propositions.

Keywords: molecular propositions; conjunction; disjunction; conditionality; categorical propositions; connectives; categorematic terms

Chapter.  6515 words. 

Subjects: Philosophy of Mathematics and Logic

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