STEVE AWODEY is Associate Professor, Department of Philosophy, Carnegie-Mellon University, USA DENIS BONNAY is Associate Professor, Department of Philosophy, University Paris X Nanterre, France JACQUES BOUVERESSE is Professor at the College de France, France ANDRE W. CARUS is the author of numerous papers on Carnap RICHARD CREATH is Professor, Department of Philosophy and in the School of Life Science and Director Program in the History and Philosophy of Science, Arizona State University, USA MICHAEL FRIEDMAN is Frederick P. Rehmus Family Professor of Humanities and Professor of Philosophy, Stanford University, USA WARREN GOLDFARB has been on the faculty of the Philosophy Department at Harvard University since 1975 THOMAS RICKETTS is Professor of Philosophy, University of Pittsburgh, USA PHILIPPE DE ROUILHAN is 'Directeur de Recherche' at the IHPST (Institut d'histoire et de Philosophie des Sciences et des Techniques), France THOMAS UEBEL is Professor and Head of Philosophy, University of Manchester, UK