Proofs of Propositions in 14th-Century Logic

Paul Spade famously complained in 2000 that four key components of late medieval logic were mysterious to modern scholars. Since then, much has been done to clarify two of them (obligations and supposition), but the other two (exposition and proofs of propositions) remain just as mysterious. The aim of this workshop is to reach a clearer understanding of the genre of 'proofs of propositions' (probationes propositionum) that came to characterize British logic in the second half of the 14th century. We would also welcome contributions that shed some light on the earlier theories of 'exposition' that were subsumed into this new genre.

The list of participants currently includes Jennifer Ashworth, Harald Berger, Egbert Bos, Martin Dekarli, Ota Pavlíček and Joke Spruyt. Further details will be made available in due course on the website: