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A propos de l'auteur :

Mathematician, professor emeritus at the University of Campinas, member of the International Academy of the History of Science, founding member (Berlin, 1991) of the INES (International Network of Engineers and Scientists for Global Responsibility), honorary president of the Sociedade Brasileira de História da Ciência, member of the Academia de Ciências do Estado de São Paulo, corresponding member of the Academia Nacional de Ciencias de Buenos Aires (ANCBA).