Charles-Michel Marle

Charles-Michel Marle (born 26 November 1934 in Guelma, Algeria) is a French engineer and mathematician, corresponding member of the French Academy of sciences since 1983. Charles-Michel Marle is Professor Emeritus at Pierre and Marie Curie University.
Biography.
Charles-Michel Marle completed his primary and secondary education in Constantine (Algeria) where he obtained the first part of the baccalaureate in 1950, and the second part (elementary mathematics series) in 1951.
He was a pupil of the preparatory classes for the grandes écoles at the Lycée Bugeaud in Algiers: higher mathematics in 1951-1952, then special mathematics in 1952-1953.
He was admitted to the École Polytechnique in 1953. When he left this school in 1955, he opted for the Corps des mines.
He did his military service as a second lieutenant at the Engineering School in Angers from October 1955 to February 1956, then in Algeria during the war until 30 December 1956.
Having been kept in the army for a few more months, he began attending the Ecole Nationale Supérieure des Mines in Paris in January 1957, three months late. From October 1957 to September 1958 he attended the École nationale supérieure du pétrole et des moteurs and completed various internships in the oil industry in France and Algeria. Returning to the Paris School of Mines in October 1958, his last year of study was interrupted in January or February 1959 by the decision, taken at that time by the Minister of Industry, to send all junior civil servants of category A to Algeria to participate in the Constantine Plan. He was then attached to the short-lived Common Organisation of the Saharan Regions and worked in Algiers, the Sahara and Paris on various industrial projects.
In October 1959 he was seconded by the Corps des Mines to the French Petroleum Institute (IFP), where he was a research engineer, then head of department, then director of division, until September 1969.
While working at this Institute, with a view to a change of direction, he obtained a degree in mathematics and prepared a doctoral thesis under the supervision of Professor André Lichnerowicz. He works on this thesis outside of working hours at IFP, as his subject has nothing to do with the research done at this Institute.
In October 1969 he changed direction when he entered higher education. First he was a lecturer at the University of Besançon from October 1969 to September 1975, then at the Pierre-et-Marie-Curie University in Paris, and was appointed professor at this university in 1977. He remained there until his retirement in September 2000.
Charles-Michel Marle is the great-great-grandson of the grammarian L. C. Marle (1799-1860), author of an attempt at spelling reform around 1840.
Scientific work.
Work carried out at the French Petroleum Institute.
This work focused on fluid flows in porous media, which are being investigated for applications in hydrocarbon field development. He published a book on the subject, developing a course that he taught at the École nationale du pétrole et des moteurs.
He has published two articles in this field.
Thesis.
The problem he studied in his thesis was the establishment of equations of viscous, heat-conducting, non-uniform composition relativistic fluid dynamics from the Boltzmann relativistic equation. His thesis was published in two papers.
Work on symplectic geometry and Hamiltonian systems.
Since the early 1970s, and until today, he has worked mainly on symplectic geometry, Poisson geometry and their applications in mechanics and physics. With his colleague Paulette Libermann (1919-2007) he published a research-level book on this subject.
He has recently published another book, taking up part of the previous one, exposing recent results obtained in this field since 1987.
He has published a number of articles in this field.