3 dec 2018 -- 16:30
Sala Seminari, DM, Pisa
Seminari dei baby-geometri
Abstract.
(Gli unici prerequisiti per poter seguire questo seminario sono sapere cos'è un nodo e cos'è una 4-varietà) Recently Lisa Piccirillo showed that the Conway knot is not slice. I will explain this longstanding problem and outline Lisa's proof. I will conclude with some remarks about Freedman-Gompf-Morrison-Walker's attempt of disproof of the smooth four-dimensional Poincaré conjecture.