Informes
23/05/08 ENS Seminaire Riemann Salle Weil Seminar devoted to Felix Klein and the Erlangen Program: David Rowe: From line geometry to relativity theory. The broader context of Klein's Erlangen Program / James Ritter: The renewal and enlargement of the Erlangen program / 24/05/08 CHSPAM Seminaire d'Histoire des Sciences de L'Antiquite a L'Age Calssique: E Audureau: Le Concept Cartesian de Fonction / Christian Houzel: Leibniz et l' analysis situs en sens Leibnizien