Webページ:http://abelard.flet.keio.ac.jp/seminar/Disagreement_in_Logic_and_Reasoning/
the representative of the French group of the Project, and the Director of IHPST(Institute of History and Philosophy of Science and Technology) and Professor of University of Paris-1.
the representative of the Japanese group of the Project, and the Founding Director of GRCLS (Global Research Center for Logic and Sensitivity) and Professor Emeritus of Keio University.