<P><STRONG>Catherine Goldstein</STRONG> is Directrice de recherches du CNRS and works at the Institut de math??matiques de Jussieu (Paris, France). She is the author of "Un th??or??me de Fermat et ses lecteurs" (1995) and a coeditor of "Mathematical Europe: History, Myth, Identity"(1996). Her research aims at developing a social history of mathematical practices and results, combining close readings and a network analysis of texts. Her current projects include the study of mathematical sciences through World War I and of experimentation in XVII th-century number the...