2021-2022: Graphs of high chromatic number (M2), at ENS de Lyon with Stéphan Thomassé. Advanced Graph Theory (M2), at U. Bordeaux with François Dross. 2020-2021: Graphs of high chromatic number (M2), at ENS de Lyon with Stéphan Thomassé. Advanced Graph Theory (M2), at U. Bordeaux with Éric Sopena.