Monday, November 9th, 2026
Math Event: Symplectic Geometry, Gauge Theory, and Low-Dimensional Topology Seminar: Noah Porcelli - TBA
Time: 12:30 PM - 1:55 PM
Location: Math P-131
Speaker: Noah Porcelli
Abstract: TBA
Speaker: Noah Porcelli
Abstract: TBA
Tuesday, November 10th, 2026
Math Event: Geometry/Topology Seminar: Di Cerbo,Luca - Almgren Frequency Functions on Cartan-Hadamard Manifolds
Time: 4:00 PM - 5:15 PM
Location: P-131
Speaker: Di Cerbo,Luca
Abstract: In this talk, I will discuss a project aimed at constructing an Almgren-type frequency function for harmonic functions on Cartan-Hadamard manifolds. I will describe recent progress in this direction, building on a Price equality for harmonic forms that I established jointly with Mark Stern in 2017.
Speaker: Di Cerbo,Luca
Abstract: In this talk, I will discuss a project aimed at constructing an Almgren-type frequency function for harmonic functions on Cartan-Hadamard manifolds. I will describe recent progress in this direction, building on a Price equality for harmonic forms that I established jointly with Mark Stern in 2017.
Thursday, November 12th, 2026
Math Event: Colloquium: Tristan Ozuch - Positive Einstein metrics on infinitely many 4-manifolds
Time: 2:15 PM - 3:15 PM
Location: Math Tower P-131
Speaker: Tristan Ozuch
Abstract: Abstract: We construct Einstein metrics with positive scalar curvature on two infinite families of 4-manifolds. As the topology increases, we describe their degeneration precisely: the metrics collapse to an explicit 2-disk while bubbling off periodic gravitational instantons with Kasner asymptotics, one of which is new.
Speaker: Tristan Ozuch
Abstract: Abstract: We construct Einstein metrics with positive scalar curvature on two infinite families of 4-manifolds. As the topology increases, we describe their degeneration precisely: the metrics collapse to an explicit 2-disk while bubbling off periodic gravitational instantons with Kasner asymptotics, one of which is new.