Wednesday November 15, 2017 3:00 PM  3:30 PM Math Tower 5127
 Demetre Kazaras, Stony Brook University
Positive scalar curvature and surgeryI'll talk about a basic tool in the study of Riemannian metrics of positive scalar curvature. The first version of this idea is a downtoearth construction due to GromovLawson which shows that any manifold which results from a codimension >2 surgery on a manifold with a positive scalar curvature metric also admits a positive scalar curvature metric. I'll also talk about a more general version of this tool due to Chernysh and Walsh and sketch one or two nonobvious applications of these ideas.
