Pure Math Grad Student Seminar (PuMaGraSS)
Friday, September 14, 2018 at 12:00am to 1:00pm
Speaker: Ao Sun
Title: Scalar Curvature and Positive Mass Theorem
Abstract: Positive energy theorem, which is more commonly known as the positive mass theorem, is one of the most exciting theorems connecting geometry and physics. The theorem can be understood as a comparison theorem of scalar curvature. It was first proved by Schoen-Yau in 1979, and later by Witten in 1981. They are proofs are so different and even nowadays people do not know how to explain the differences and unify these two proofs.