Can embedding problems be used to distinguish S^4 from other (possible) homotopy 4-spheres?
CMSA 20 Garden Street, Cambridge, MA, United Stateshttps://youtu.be/18eVp3fOh-4 Speaker: Michael Freedman, Harvard CMSA Title: Can embedding problems be used to distinguish S^4 from other (possible) homotopy 4-spheres? Abstract: There are approaches in the literature (using Khovanov homology) […]