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Saw Seminar History and Philosophy of Mathematics15th December 2014, 9.30 am-1 pmUniversity Paris DiderotSession (in English and French) prepared with the ERC Project SAW "Mathematical Sciences in the Ancient World" organised by Christine Proust, Maarten Bullynck and Marie-José Durand-Richard (SPHERE).Nadine de Courtenay (Univ. Paris Diderot, SPHERE) [in English]The gift of mistaking. Approximation and uncertainty as modalities of the mathematical translation of physical phenomena.Maarten Bullynck (Univ. Paris 8 and SPHERE) [in English] and Marie-José Durand-Richard (SPHERE) [in French]Douglas R. Hartree (1891-1958) : les méthodes d’approximation à m’épreuve de l’ordinateurD.R. Hartree both witnessed and contributed to the transition from analogue machines (the differential analyser) to digital machines, from desk machines to computers. This influenced both his practices and his thoughts about mathematical physics and calculating machines. We will examine the impact of this transition on approximation methods as Hartree viewed it, both in Calculating Machines (1949) and in Numerical Analysis (1952).Bâtiment/Building Condorcet, Room/Salle 646 A  4 rue Elsa Morante 75013 Paris or 10 rue Alice Domon et Léonie Duquet 75013 ParisProgramme and Map