Jean Ecalle Chercheur au CNRS (D.R.) Equipe d'Analyse Harmonique Mathématiques, Bât. 425 Université Paris-Sud 91405 Orsay Cedex - France  Email : Jean.Ecalle@math.u-psud.fr  Office room : 152  Phone : 33 (0) 1 69 15 57 51 Main research themes. Main publications. Updates on the flexion structure and ARI-GARI. Updates on resurgence and acceleration theory. Some program packages. Former PhD students. Miscellanea. Links & bookmarks.