Dave Auckly, Kansas State University

Title: "Schniedermann-Teichner"

Abstract:: Dave will continue Rustam's talk about Schneiderman-Teichner's paper "Homotopy versus isotopy: spheres with duals in 4-manifolds" https://arxiv.org/abs/1904.12350  
He will talk about its Section 3 "New proof of Gabai's light bulb theorem".