- Series
- Geometry Topology Seminar Pre-talk
- Time
- Monday, March 11, 2019 - 12:45pm for 1 hour (actually 50 minutes)
- Location
- Skiles 257
- Speaker
- Hannah Schwartz – Bryn Mawr
- Organizer
- John Etnyre
In this talk, we will examine the relationship between homotopy, topological isotopy, and smooth isotopy of surfaces in 4-manifolds. In particular, we will discuss how to produce (1) examples of topologically but not smoothly isotopic spheres, and (2) a smooth isotopy from a homotopy, under special circumstances (i.e. Gabai's recent work on the ``4D Lightbulb Theorem").