Informes
05/03/09 Proof study day on ideal elements, REHSEIS, Paris: David Rabouin: Leibniz on infinitesimals / Karine Cehmla & Bruno Belhoste: Poncelet's ideal elements in geometry; between Carnot & Chasles (first part) / Karine Cehmla & Bruno Belhoste: Poncelet's ideal elements in geometry; between Carnot & Chasles (second part) / Lunch discussions / Brice Halimi: The case of nonstasndard set theory