Doug Stryker dstryker at princeton dot edu
Volume growth and first eigenvalue of noncompact 3-manifolds with positive scalar curvature
Gromov's mu-bubble technique is a powerful tool in 3-manifold geometry. I will present a general geometric argument using mu-bubbles that applies to 3-manifolds with positive scalar curvature and stable minimal hypersurfaces in certain 4-manifolds, based on joint work with Otis Chodosh and Chao Li.