PP-2011-08: William of Sherwood, singular propositions and the hexagon of opposition.

PP-2011-08: Khomskii, Yurii (2011) William of Sherwood, singular propositions and the hexagon of opposition. [Report]

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Abstract

In Aristotelian logic, the predominant view has always been that there are only two kinds of quantities: universal and particular. For this reason, philosophers have struggled with singular propositions (e.g., ``Socrates is running''). One modern approach to this problem, as first proposed in 1955 by Tadeusz Czezowski, is to extend the traditional Square of Opposition to a Hexagon of Opposition. We note that the medieval author William of Sherwood developed a similar theory of singular propositions, much earlier than Czezowski, and that it is not impossible that the Hexagon itself could have been present in Sherwood's writings.

Item Type: Report
Report Nr: PP-2011-08
Series Name: Prepublication (PP) Series
Year: 2011
Uncontrolled Keywords: William of Sherwood; Square of opposition; Medieval logic
Subjects: Logic
Date Deposited: 12 Oct 2016 14:37
Last Modified: 12 Oct 2016 14:37
URI: https://eprints.illc.uva.nl/id/eprint/412

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