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Bienvenue - Laboratoire Jacques-Louis Lions




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Key figures

Key figures

189 people work at LJLL

86 permanent staff

80 researchers and permanent lecturers

6 engineers, technicians and administrative staff

103 non-permanent staff

74 Phd students

15 post-doc and ATER

14 emeritus scholars and external collaborators


January 2022


Established in 1969, the Laboratory is named after its founder Jacques-Louis Lions. The Laboratory is a joint research unit between Sorbonne University and the University of Paris.


The Laboratoire Jacques-Louis Lions (LJLL) is the largest department of applied mathematics in France and stands as one of the world leaders in applied mathematics for both training and research. At Sorbonne University it offers two (second-year) master programs which provide training for about 100 graduate students. The research activity at LJLL spans many different topics including : mathematical analysis, modeling, and high performance computing for physical phenomena described by partial differential equations. With approximately 100 academics, engineers, permanent or emeritus members, and about 100 doctoral or post-doctoral students, the Laboratory is in close interaction with the economic world and with other scientific fields across a wide spectrum of applications including: fluid dynamics; physics, mechanics, and theoretical chemistry; control, optimization, and finance; medical and biological sciences; signal and data processing methods.


The director of the Laboratory is currently Emmanuel Trélat

English version : February 2022