Member of the C.N.U. and C.S.U. (National committee for
Universities)
(1972-1976, 1984-1986)
President of the C.N.U. in mathematics (1991-1999)
President of S.M.A.I. (French Society for Applied and Industrial
Mathematics) (1987-1990)
Member of the editorial board of "SIAM Numerical Analysis" (1988-1995)
Member of the editorial board of "Mathematical Methods in the
Applied Sciences" (1977-2001)
Member of the program committee of CICIAM95
Member of the price committee of CICIAM99
Prix Jacques Louis Lions de l'Académie des Sciences, Paris (2005)
Chaire M. Dassault, Centro de Modelamiento Matemático
Universidad de Chile (2005-2006)