- Geometry Topology Student Seminar
- Wednesday, November 30, 2022 - 14:00 for 1 hour (actually 50 minutes)
- Skiles 006
- Jaden Wang – Georgia Tech
Disks are nice for many reasons. In this casual talk, I will try to convince you that it's even nicer than you think by presenting the Alexander's lemma. Just like in algebraic topology, we are going to rely on disks heavily to understand mapping class groups of surfaces. The particular method is called the Alexander's method. Twice the Alexander, twice the fun! No background in mapping class group is required.