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Saw Three-Month Workshop Mathematical practices in relation to the astral sciences16th January 2015, 9.30 am-5.30pmUniversity Paris Diderot16 January 2015: Measurement units and magnitudes - Room 483 AJohn Steele (Brown University, USA)Numbers and Units in Babylonian astronomy: The Case of the Rising Time Schemes and the Ziqpu-Star TextsAgathe Keller (Sphère, CNRS &#38; University Paris Diderot, SAW Project)Pṛthūdhaka's commentary on Brahmagupta's rules on operations with sexagesimal numbers or measuring units. (BSS.12.62-65)Karine Chemla (Sphère, CNRS &#38; University Paris Diderot, SAW Project)Various types of numbers, various types of approximations in early Chinese writings on mathematics and astral sciences (short talk)&#160;Bâtiment/Building Condorcet, Room/Salle 483A 4 rue Elsa Morante 75013 Paris or 10 rue Alice Domon et Léonie Duquet 75013 ParisProgramme and Map