Everything Alexander in the context of mapping class group

Geometry Topology Student Seminar
Wednesday, November 30, 2022 - 2:00pm for 1 hour (actually 50 minutes)
Skiles 006
Jaden Wang – Georgia Tech
Sierra Knavel

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.