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Robert Blanché died in 1975. Nine years before,in 1966, he published with Vrin: Structures intellectuelles. Therein, he deals with the logical hexagon. Whereas the logical square or square of Apuleius represents four values: A,E,I,O , the logical hexagon represents six that is not only A,E,I,O but also two new values: Y and U.
To those wanting to learn more about Robert Blanché's hexagon, I advise to have a look at a personal site called Mindnewcontinent and peruse the paper: KNOLmnc 1 To the British Society for the History of Philosophy.The logical square of Aristotle or square of Apuleius. The logical hexagon of Robert Blanché in Structures intellectuelles. The triangle of Indian logic mentioned by J.M Bochenski.
(84.100.243.70 (talk) 08:50, 12 September 2012 (UTC))
(Jean KemperN (talk) 05:27, 30 December 2010 (UTC))
(84.100.243.12 (talk) 13:49, 25 May 2011 (UTC))[reply]
