A wonderful mathematical party  took place in Lyon from June 27th to July 3rd 2015.

Geometries in action.

I would like to thank the organizers, all friends and colleagues, who contributed to this happy moment, not only from the mathematical point of view. Thanks to all the speakers: it was a great honor to have them in Lyon.

I like very much the plural in “geometries”. With “In action” as a suffix, it looks even better. The conference was a big success: no doubt that among the many meetings that I attended this one is my favorite 🙂

The weekend before the Conference, a more “private” party was organized in château de Goutelas, with all my former students, some of their own students, and some of my closest mathematical friends. I have been knowing this magical place for a long time. The weather was gorgeous, the talks were excellent, and the atmosphere unforgettable.