Closed hypersurfaces of low entropy are isotopically trivial

Geometry & Topology
Event time: 
Tuesday, September 28, 2021 - 4:15pm
LOM 214
Lu Wang
Speaker affiliation: 
Yale University
Event description: 

We show that any closed connected hypersurface in 4-dimensional Euclidean space with entropy less than or equal to that of the round cylinder is smoothly isotopic to the standard three-sphere. This is joint work with Jacob Bernstein.