Escola de Inverno de Matemática 

14/03/2024, 16:00 — 16:15 — Sala P3.10, Pavilhão de Matemática Online
Pedro Boavida, Instituto Superior Técnico

Kontsevich integrals and points

In the late 1950s, Smale proved that the inclusion of the group of isometries of the $S^2$ sphere in the group of diffeomorphisms is a homotopy equivalence, and asked whether this would be true for higher-dimensional spheres. In the 1980s, Hatcher confirmed Smale's suspicion for the 3-sphere, but the 4-dimensional case remained open until recently.

Ver também

16H00_PB_h.pdf