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Logical Analogies: Interpretations, Oppositions, and Probabilism

Filosofía, Universidad Popular Autónoma del Estado de Puebla, Puebla 72410, Mexico
Philosophies 2019, 4(2), 13; https://doi.org/10.3390/philosophies4020013
Received: 31 December 2018 / Revised: 20 March 2019 / Accepted: 22 March 2019 / Published: 2 April 2019
(This article belongs to the Special Issue Philosophies on Analogy)
I present two logical systems to show the “analogy of proportionality” common to several interpretations: modality (necessity and possibility), quantification, truth-functional relations, moral attitudes (deontic logic), states of knowledge (epistemic logic), and states of belief (doxastic logic). To display the two underlying analogical relations, I call upon the originally Scholastic convention, recently put to use again, of using squares, hexagons, and octagons “of opposition”. A combined epistemic–deontic logic happens to be found in the traditional “probabilist” theory of the “good conscience”, and I shall then briefly explain how this is so. View Full-Text
Keywords: analogy; modal logic; Scholasticism; square of opposition; hexagon; octagon; probabilism; Aquinas; Leibniz; Hintikka analogy; modal logic; Scholasticism; square of opposition; hexagon; octagon; probabilism; Aquinas; Leibniz; Hintikka
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Redmond, W. Logical Analogies: Interpretations, Oppositions, and Probabilism. Philosophies 2019, 4, 13.

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