Catarina Dutilh Novaes (2011-2016) is the leader of the project. Catarina studied philosophy (major) and mathematics (minor) at the University of Sao Paulo in Brazil. She then moved to the Netherlands to obtain a MSc in Logic at the ILLC (University of Amsterdam) in 2000, and a PhD in Leiden in 2006, with a dissertation on medieval logic and semantics and formalizations thereof. A revised version of the dissertation was published by Springer in 2007, Formalizing Medieval Logical Theories --  Suppositio, Consequentia and Obligationes. She was then a visiting post-doc at Fordham and at the CUNY Graduate Center for one year, after which she took up a research position at the ILLC in Amsterdam with a VENI-project on formal languages. The project ran for four years (2007-2011), and its main output is a book  Formal Languages in Logic -- A Philosophical and Cognitive Analysis (Cambridge University Press, 2012). In July 2011 she became a Rosalind Franklin fellow and assistant professor at the Faculty of Philosophy of the University of Groningen.

Catarina's main research interests are: history and philosophy of logic, the psychology and cognitive science of reasoning, medieval philosophy, but in fact she enjoys all kinds of historically-informed, empirically-responsible philosophical investigations. She self-identifies as a feminist, and tries to be an active blogger at NewAPPS and M-Phi.

Matthew Duncombe  was a post-doctoral researcher with the project (2012-2014). Matthew studied for his Bachelors' and Masters' degrees in philosophy at the University of Cambridge, where he specialized in the philosophy of language and the history of ancient and modern philosophy. After a period working in business, he returned to Cambridge for doctoral work in the Faculty of Classics. In 2009-10 he was a visiting student at the
ENS in Paris

Matthew's PhD dissertation concerns the logic, ontology and origin of relative terms in Plato. It argues that Plato's conception of relative terms had its origins in the dialectical practices that were current in Plato's Academy. Matthew's main research interests are the history of ancient philosophy (especially Plato, Aristotle and Hellenistic philosophy), ancient and modern logic, and comparative philosophy. He has taught a range of topics including philosophy of religion, philosophy of science, political philosophy, logic, Plato, Aristotle, and Presocratic and Hellenistic philosophy. He contributes pieces to Blogistikon, an ancient philosophy blog.  

Rohan French is a post-doctoral researcher on the project (2015-2016). Rohan studied Arts/Computer Science, majoring in Philosophy, at Monash University (2002-2006), before going on to do a PhD in Philosophy at Monash University under the watchful eyes of Lloyd Humberstone. Rohan has been a research associate at Monash University, as well as a visiting researcher in the department of Logic & Philosophy of Science at UC Irvine. From 2013-2014 he worked with Jen Davoren and Greg Restall on producing the Coursera MOOCs Logic: Language and Information 1 and Logic: Language and Information 2

Rohan’s main research interests are in philosophical proof-theory and the philosophical applications of modal logics. He has taught logic at all levels, as well as metaphysics, the philosophy of language, and critical thinking. Rohan is currently working on developing dialogue semantics motivated by the built-in opponent conception of a proof, with the aim of ultimately applying these dialogue semantics to various problems in the philosophy of logic. 

Leon Geerdink
Leon Geerdink (2012-2016) is the PhD student of the project. He received both his Bachelors (2010) as his Masters (2012) in theoretical philosophy from Utrecht University. He has tried to study everything he could lay his hands on, but ended up specializing in the history of logic and the history of early analytic philosophy, Russell’s early philosophical development in particular. 

His main interest lies in topics where philosophy and science, including behavioral and formal, meet. He has extensive experience as a teaching assistant having been a TA multiple times in nearly every first year philosophy course given at Utrecht University. Leon is currently working on developing a better understanding of the relation between logic and psychology, analyzing the role that logic is understood to play in the psychology of reasoning.

Erik Krabbe (2012-2016) is the professor emeritus (of logic and argumentation) who joined the project. Erik studied liberal arts at Union College (Schenectady, NY) and philosophy (major) and mathematics (minor) at the University of Amsterdam. In 1982, he took a Ph.D. at the University of Groningen, with a dissertation on dialogical logic. He taught logic and/or argumentation theory at the University of Amsterdam (1969-1971), at the University of Utrecht (1971-1988), and at the University of Groningen (1988-2008), where in 1995 he was appointed as full professor on a special chair for philosophical theory of argumentation. Together with Else Barth, he wrote From Axiom to Dialogue (1982), a comprehensive study of dialectic systems and their connections with other types of logic. Together with Douglas Walton, he wrote Commitment in Dialogue (1995) on the basic concepts needed for the theory of interpersonal reasoning, such as the kinds of commitment and the types of dialogue, and on the integration of different approaches to formal dialogue theory (formal dialectic). He retired in 2008.


Erik’s main research interests have always been focused on the dialectical approach to argumentation, and specifically on formalizations of dialectical procedures, on the theory of fallacies, and on the classical backgrounds of argumentation theory. After retirement he has been working on competition and cooperation in Aristotelian and other dialectic, on the formalization of the pragma-dialectical procedure of critical discussion, and – with Jan Albert van Laar – on a more refined way to describe kinds of criticism and the obligations of the critic in argumentative discussion. He finds it hard to write a paper without going back to Aristotle.