Andrée C. Ehresmann is "Professeur Emérite" at the Université de Picardie Jules Verne, Amiens, and Director of the international Journal Cahiers de Topologie et Géométrie Différentielle Catégoriques. Author or Editor of several books (e.g. Memory Evolutive Systems, 2007 and Integral Biomathics, 2012) she has published more than 100 papers on different mathematical or multidisciplinary domains. These include functional analysis with applications to control and optimization problems; category theory (sketches, higher order categories, with Charles Ehresmann); a theory of Memory Evolutive Systems, a model based on a 'dynamic' category theory, for living organisms, such as biological, social or cultural systems, with application to the emergence of higher cognitive processes (developed with Jean-Paul Vanbremeersch); and recently she initiated a study of anticipation and individual or collective creativity (with Mathias Béjean) . Most of the papers are accessible on her site

Olivia Lucca Fraser is an independent researcher living in Halifax, Nova Scotia, with her four youngest children. She is a participant in several geographically dispersed research networks including the New Centre for Research and Practice, the Jan van Eyck Association, the Form & Formalism Working Group, and a feminist collective writing under the shared pseudonym, 'Laboria Cuboniks'. Her research deals with mathematical logic, dialectics, feminist and accelerationist political theory, computation, and artificial intelligence. She writes theoretical essays, poems, and code.

Martin Holbraad is a UK-based anthropologist, Reader in Social Anthropology at University College of London (UCL). His main field research is in Cuba, where he focuses on Afro-Cuban religions and revolutionary politics. He is the author of Truth in Motion: The Recursive Anthropology of Cuban Divination (Chicago, 2012). He is also co-editor of Thinking Through Things: Theorising Artefacts Ethnographically (Routledge, 2007), and of a volume on the contemporary relevance of the anthropological study of cosmology, entitled Framing Cosmologies: The Anthropology of Worlds (Manchester, 2014). Holbraad has also conducted research with the UK-based theatre groups Frantic Assembly and Real Circumstance, exploring the practices of theatrical creativity and their ‘reality effects.’ At present, together with Morten Axel Pedersen, he is writing a book provisionally titled The Ontological Turn: An Anthropological Exposition. Due to appear in 2016 with Cambridge University Press, the book seeks to elucidate the recent emergence of the so-called ‘ontological turn’ as a distinctive anthropological orientation, articulating its core tenets and methodological implications, and exploring its influence in contemporary anthropological research. He also directs Making Selves, Making Revolutions: Comparative Anthropologies of Revolutionary Politics (CARP), a 5-year ERC-funded project launching the comparative study of revolutionary personhood as a new departure for anthropological research.

Franck Jedrzejewski is a mathematician and Doctor in philosophy and musicology. He has published over a dozen titles, including Ontology of Categories (Ontologie des Catégories, 2011), research in music theory (Mathematical Theory of Music, 2006, Looking at Numbers, 2013, with composer Tom Johnson), and in the history of sciences and mathematics (aleatory models and probabilistic physics). A second edition of his Dictionnaire des Musiques Microtonales (2004) was recently published (2014). His research is highly transdisciplinary (music, philosophy, mathematics, categories, atonality, russian avant-garde music). He currently teaches at Université de Paris-Sud and the INSTN (the National Institute for Nuclear Science and Technology).

Giuseppe Longo is Research Director at the CNRS (The National Center for Scientific Research, France) at the Centre Interdisciplinaire Cavaillès, (République des Savoirs, Collège de France et l’Ecole Normale Supérieure, Paris) and Adjunct Professor at the Department of Integrative Physiology and Pathobiology, Tufts University School of Medicine, Boston Tufts University, Boston. He is a former Professor of Mathematical Logic and, after that, of Computer Science at the University of Pisa. He spent three years in the USA (at Berkeley, the M.I.T., Carnegie Mellon) as a researcher and Visiting Professor, in addition to spending several months visiting Oxford and Utrecht. Longo worked in Mathematical Logic and on various applications of Mathematical Logic to Computer Science. He has been a member of the Academia Europea since 1992. Since 1991, Longo has been editor-in-chief of Mathematical Structures in Computer Science, a leading scientific journal of the Cambridge University Press and (co-)authored more than 100 papers. He is also the author, together with A. Asperti, of Categories, Types and Structures (1991). He recently extended his research interests and work to the Epistemology of Mathematics and Theoretical Biology. Together with F.Bailly, he published Mathematics and the natural sciences: The Physical Singularity of Life (2011), a book that proposes a novel approach to cross-foundational analyses in Mathematics, Physics and Biology. Its consequences for more specific theorization in Biology are developed in a joint book with M. Montévil, Perspectives on Organisms: Biological Time, Symmetries, and Singularities (2013). See site

Frederik Stjernfelt is a Danish philosopher. He is a Professor at the Institut for Kunst og Kulturvidenskab, at the University of Copenhagen, Denmark. He is the author of Natural Propositions The Actuality of Peirce’s Doctrine of Dicisigns (2014), and of Diagrammatology. An Investigation on the Borderlines of Phenomenology, Ontology, and Semiotics (2007), from his doctoral thesis on Peirce’s theory of continuum, and diagrammatic thinking. His books also include The Democratic Contradictions of Multiculturalism (with Jens Martin Eriksen, 2012), and Semiotics (with Peer Bundgaard, 2010). In 2011, he co-edited a special issue of the Semiotica, the Journal of the International Association for Semiotic Studies, on Diagrammatical Reasoning and Peircean Logic and Representations. This special issue can be accessed here: