01:12:56
publiée le 11 juin 2026
On actions of braid groups on triangulated categories arising in cluster theory
De Bernhard Keller
![[1954] Sur les pseudo-rotations analytiques de surfaces](/media/cache/video_light/uploads/video/SeminaireBourbaki.png)
Flat surfaces and combinatorics
Apparaît dans les collections : Winter pre-school on combinatorics and interactions / Ecole d'hiver combinatoire et interactions, Ecoles de recherche
Billiards in polygons are related to dynamics of the linear flow on flat surfaces. Through some examples of counting problems on flat surfaces and on moduli spaces of flat surfaces, we will see how combinatorics can lead to interesting dynamical results in this setting.
