Reports
11/06/08 Mathematical Understanding Workshop, Universite Denis Diderot Paris VII: Jeremy Avigad: The role of the diagram in Euclid's elements / Seminaire en Epistemologie et L'Histoire des Idees Mathematiques, Institut Herni Poincaré, Paris: Michel Serfati: Ideals, duality principles and anticipations of the category-theoretic outlook in the work of Marshal Stone (1903-1989) / Mathematical Understanding Workshop, Universite Denis Diderot Paris VII: Mark Steiner: Getting more out of mathematics than we put in; the case of complex numbers and their generalisations / Michel Paty: La structure du rationnel dans l'invention de lat théorie de la relativité et de la théorie quantique / 12/06/08 Jan von Plato: A combinatorial view of mathematical proofs