My main research interest remains the notion of logical consequence; and extends from medieval theories in the philosophy of language, mind and logic, to the more modern concerns of relevance logic and the philosophy of logic, in particular, proof-theoretic semantics and the semantic paradoxes.
My new English translation with Introduction of John Buridan's Treatise on Consequences (a translation of Hubien's 1976 edition of the Latin text Tractatus de Consequentiis) has appeared last November (but dated 2015) with Fordham UP. Here is a list of corrections and improvements. I reviewed an earlier English translation in Vivarium 25 (1987), pp. 154-7.
From the summer of 2015, I will be leading a new Arché research group on History and Philosophy of Logic and Mathematics.
I was the Principal Investigator in an Arché research project, funded by the Arts and Humanities Research Council (AHRC) on the Foundations of Logical Consequence. This project started in January 2009 and concluded in June 2012. Subsequently, I led the MMM Arché project (Models, Modality and Meaning, 2012-15).
An earlier project was an examination of Bradwardine’s discussion of insolubles and the Liar paradox. I prepared a new edition and English translation of Bradwardine’s Latin text from the thirteen known manuscripts. The work appeared in May 2010 as volume 10 in the series Dallas Medieval Texts and Translations published by Peeters. Here is a list of corrections and improvements.
An interview (End Times: medieval matters) with Richard Marshall was published last year in 3:AM Magazine.
slr at st-and dot ac dot uk