Chapter

Syllogistic Tense Logic

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/9780198240266.003.0008
Syllogistic Tense Logic

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The term ‘syllogism’ was used in a wide sense to signify any piece of reasoning, theoretical or practical. Within the area of theoretical reasoning, a distinction was drawn between categorical and molecular syllogisms. A molecular syllogism is distinguished by the presence of at least one molecular proposition occurring as a premiss. In a categorical syllogism, on the other hand, each proposition, whether premiss or conclusion, is categorical. Aristotle expounded on a theory of syllogism that was taken up by medieval logicians and extended in a variety of directions. This chapter focuses on elementary syllogistic and syllogistic tense logic and addresses the question of whether there can be valid syllogisms containing non-present-tensed premisses.

Keywords: syllogism; medieval logic; premiss; molecular syllogism; categorical syllogism; elementary syllogistic; syllogistic tense logic; present tense

Chapter.  6163 words. 

Subjects: Philosophy of Mathematics and Logic

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