On October 25th, 2017, the building of the Institut de mathématique d'Orsay (IMO) was inaugurated. Emmanuel Macron, President of the Republic, was present. The IMO gathers three types of services :
- the maths laboratory "Laboratoire de mathématiques d'Orsay" (CNRS/Université Paris-Sud),
- teaching facilities,
- the Jacques Hadamard library, which is a reference library in mathematics supported by both CNRS and Université Paris-Sud,
thus yielding a cluster for mathematics.