I really like to tell the story of the four colors theorem. I did it multiple times, with various durations (from 5 min to 1h30) and publics (students, researchers, "amateurs"). I was mostly using a board, so no traces remain, but one on those instances was filmed as part of the 5 minutes Lebesgue.

I take part in the Chantiers Arts, Technologies et Sciences, with researcher Bertrand Michel, theatre authors Sylvain Renard and Rémi Chechetto, and technical high school classes and teachers. The project should have borne fruits during the 2020 spring, but has been postponed to 2020-2021 due to the Covid-19 pandemics.

For a year I co-organized the weekly Séminaire de la Détente Mathématique, an informal seminar for staff, students and amateurs, aiming at speaking of maths in a more relaxed and casual way than usual for researchers.

A one-hour talk titled How we can classify things we know nothing about, using a little bit of computability theory, as part of the Séminaire de la Détente Mathématique.