From Aristotle's syllogistic to stoic conditionals: Holzwege or detectable paths?
Topoi 23 (1):113-137 (2004)
| Abstract | This paper is chiefly aimed at individuating some deep, but as yet almost unnoticed, similarities between Aristotle's syllogistic and the Stoic doctrine of conditionals, notably between Aristotle's metasyllogistic equimodality condition (as stated at APr. I 24, 41b27–31) and truth-conditions for third type (Chrysippean) conditionals (as they can be inferred from, say, S.E. P. II 111 and 189). In fact, as is shown in §1, Aristotle's condition amounts to introducing in his (propositional) metasyllogistic a non-truthfunctional implicational arrow '', the truth-conditions of which turn out to be logically equivalent to truth-conditions of third type conditionals, according to which only the impossible (and not the possible) follows from the impossible. Moreover, Aristotle is given precisely this non-Scotian conditional logic in two so far overlooked passages of (Latin and Hebraic translations of) Themistius' Paraphrasis of De Caelo (CAG V 4, 71.8–13 and 47.8–10 Landauer). Some further consequences of Aristotle's equimodality condition on his logic, and notably on his syllogistic (no <span class='Hi'>matter</span> whether modal or not), are pointed out and discussed at length. A (possibly Chrysippean) extension of Aristotle's condition is also discussed, along with a full characterization of truth-conditions of fourth type conditionals. | |||||||||
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Phil Corkum (forthcoming). Is Aristotle's Syllogistic a Logic? History and Philosophy of Logic.
Dwayne Raymond (2011). Polarity and Inseparability: The Foundation of the Apodictic Portion of Aristotle's Modal Logic. History and Philosophy of Logic 31 (3):193-218.
Igor Douven (2007). On Bradley's Preservation Condition for Conditionals. Erkenntnis 67 (1):111 - 118.
Frank Döring (1997). The Ramsey Test and Conditional Semantics. Journal of Philosophical Logic 26 (4):359-376.
Niki Pfeifer (2012). Experiments on Aristotle's Thesis: Towards an Experimental Philosophy of Conditionals. The Monist 95 (2):223-240.
Anthony S. Gillies (2009). On Truth-Conditions for If (but Not Quite Only If ). Philosophical Review 118 (3):325-349.
Michael J. White (1986). The Fourth Account of Conditionals in Sextus Empiricus. History and Philosophy of Logic 7 (1):1-14.
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