For many years strong links have been established between the Graduate School of Mathematical Sciences of the University of Tokyo and UMPA (Unité de Mathématiques Pures et Appliquées de l'ENS Lyon).
After 3 successful meetings in Lyon (2011), Tokyo (2013) and Lyon (2015), a fourth symposium is organized this year at the The University of Tokyo on February 19-20, 2018.
There will be also two related activities: The Tokyo-Lyon Satellite Conference in Number Theory on February 21, and 3 mini-course by Etienne Ghys on the topology of singular points of real analytic curves from February 21 to 23.
French research Team: Laurent Berger, Adrien Kassel, Marco Mazzucchelli, Valentin Seigneur, Sandra Rozensztajn, Denis Serre et Etienne Ghys
Japanese research Team: Shigeki Aida, Takahito Kashiwabara, Oleksii Leontiev, Hideko Sekiguchi, Takeshi Tsuji, Taro Asuke, Toshitake Kohno, Takashi Tsuboi, Naoki Imai et Takeshi Saito.