Per Se Modality and Natural Implication – an Account of Connexive Logic in Robert Kilwardby
Spencer C. Johnston · Logic and Logical Philosophy · 2019
We present a formal reconstruction of the theories of the medieval logician Robert Kilwardby, focusing on his account of accidental and natural inferences and the underlying modal logic that gives rise to it. We show how Kilwardby’s use of an essentialist modality underpins his connexive account of implication.