### Smooth structures on open 4-manifolds

- Series
- Geometry Topology Working Seminar
- Time
- Friday, September 9, 2022 - 14:00 for 1.5 hours (actually 80 minutes)
- Location
- Skiles 006
- Speaker
- John Etnyre – Georgia Tech

One of the most interesting and surprising features of manifold topology is the existence of topological 4-manifold that admit infinitely many smooth structures. In these talks I will discuss what is known about these “exotic” smooth structures on open manifolds, starting with R^4 and then moving on to other open 4-manifolds. We will also go over various constructions and open questions about these manifolds.