This day is organized to open Mathematics Week, on the initiative of the two mathematical foundations - Fondation Sciences Mathématiques de Paris (FSMP) and Fondation Mathématique Jacques Hadamard (FMJH) - as part of the activities supported by the DIM Math Innov. The event is also sponsored by the three French learned societies that promote mathematics (SfdS, SMAI and SMF) and supported by AMIES, CNRS and INRIA.