Tuesday, November 10, 2020
Time  Items 

All day 

9am 
11/10/2020  9:00am The squarefree integers are divisible by no square of a prime. It is well known that they have a positive density within the integers. This is joint work with Kaisa MatomÃ¤ki, Maks Radziwill and Brad Rodgers. Location:
Zoom

4pm 
11/10/2020  4:00pm In this talk, I discuss the general question of how to obstruct and construct group actions on manifolds. I will focus on large groups like Homeo(M) and Diff(M) about how they can act on another manifold N. The main result is an orbit classification theorem, which fully classifies possible orbits. I will also talk about some low dimensional applications and open questions. This is a joint work with Kathryn Mann. Location:
https://yale.zoom.us/j/96501374645
