Universität zu Köln

Demey, Lorenz ORCID: 0000-0002-0176-1958 and Steinkrueger, Philipp (2017). The Logical Geometry of John Buridan's Modal Octagon. Tijdschr. Filos., 79 (2). S. 217 - 239. LEUVEN: PEETERS. ISSN 2031-8952

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Abstract

In order to elucidate his logical analysis of modal quantified propositions (e.g. 'all men are necessarily mortal'), the 14th century philosopher John Buridan constructed a modal octagon of oppositions. In the present paper we study this modal octagon from the perspective of contemporary logical geometry. We argue that the modal octagon contains precisely six squares of opposition as subdiagrams, and classify these squares based on their logical properties. On a more abstract level, we show that Buridan's modal octagon precisely captures the interaction between two classical squares of opposition, viz. one for the quantifiers and one for the modalities. Finally, we argue that several aspects of our contemporary formal analyses were already hinted at by Buridan himself

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Demey, Lorenz UNSPECIFIED orcid.org/0000-0002-0176-1958 UNSPECIFIED Steinkrueger, Philipp UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-248524
DOI:	10.2143/TVF.79.2.3242699
Journal or Publication Title:	Tijdschr. Filos.
Volume:	79
Number:	2
Page Range:	S. 217 - 239
Date:	2017
Publisher:	PEETERS
Place of Publication:	LEUVEN
ISSN:	2031-8952
Language:	Dutch
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language SEMANTICS Multiple languages Philosophy Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/24852