Public Release: 

Francis Clarke is recipient of 2015 W. T. and Idalia Reid Prize

The prize is awarded by the Society for Industrial and Applied Mathematics

Society for Industrial and Applied Mathematics

Philadelphia, PA--Francis Clarke of Université Claude Bernard is the recipient of the 2015 W. T. and Idalia Reid Prize, awarded by the Society for Industrial and Applied Mathematics (SIAM).

Dr. Clarke has been awarded the Reid prize for his pioneering and influential work on the analysis of generalized derivatives and subdifferentials and for its applications in PDE optimization and control of nonsmooth systems.

Clarke received the award, a cash prize of $10,000 and an engraved medal, at the SIAM Conference on Control and Its Applications, held July 8-10 in Paris, France. His associated prize lecture, "Definitions and Hypotheses and All That Stuff," also delivered at the conference, was very well received.

A faculty member at Université Claude Bernard in Lyon, France, Clarke also holds a chair in mathematical control theory at L'Institut universitaire de France. He received his Ph.D. from the University of Washington.

A Fellow of the Royal Society of Canada, Clarke is a recipient of the Coxeter-James and Archambault research prizes, and a Killam Fellowship.

Clarke's research interests lie in nonsmooth analysis (a term he coined), differential equations, control theory, the calculus of variations, and optimization, as well as modeling in various interdisciplinary areas.

Established by SIAM in 1993 to recognize outstanding work in, or other contributions to, the broadly defined areas of differential equations and control theory, the Reid Prize has been given annually since 2000, and may be awarded either for a single notable achievement or a collection of such achievements. The prize fund was endowed by the late Mrs. Idalia Reid to honor her husband.


About SIAM

The Society for Industrial and Applied Mathematics (SIAM), headquartered in Philadelphia, Pennsylvania, is an international society of over 14,000 individual members, including applied and computational mathematicians and computer scientists, as well as other scientists and engineers. Members from 85 countries are researchers, educators, students, and practitioners in industry, government, laboratories, and academia. The Society, which also includes nearly 500 academic and corporate institutional members, serves and advances the disciplines of applied mathematics and computational science by publishing a variety of books and prestigious peer-reviewed research journals, by conducting conferences, and by hosting activity groups in various areas of mathematics. SIAM provides many opportunities for students including regional sections and student chapters. Further information is available at

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