Title：Comparison results for three-dimensional manifolds  

Speaker：Ovidiu Munteanu  （University of Connecticut）

Time：2021年6月18日，周五，      上午  9:00-10:30  

Room：Zoom会议号：944 7203 2228；密码：202104

Abstract：Typical comparison results in geometry require information on Ricci curvature. In dimension three, we show that this can sometimes be relaxed to scalar curvature. An example is a sharp upper bound for the bottom spectrum of the Laplacian on noncompact three-dimensional manifolds.