The Logic and Metaphysics Workshop will meet on November 10th from 2:00-4:00 in-person at the Graduate Center (Room 8203) for a talk by Yale Weiss (CUNY).

Title: Peripatetics, Stoics, and connexive implication

Abstract: Connexive logics form a heterodox family of systems characterized by contra-classical principles of conditionality and negation including so-called Aristotle’s and Boethius’ theses. In this talk, I introduce connexive logic and survey its origins. While McCall (1966) attributed connexivism to Peripatetic and Stoic logicians alike, and Lenzen (2022) argued against attributing it to several Peripatetic logicians, I argue that there is strong evidence for connexivism throughout the Peripatetic tradition but that Stoic logicians such as Chrysippus are unlikely to have embraced it. Along the way, I critically examine possible motivations for Peripatetic connexivism and note connections to more recent logical developments.