Professor Oscar Perdomo, Central Connecticut University
Colloquium Title: Embedded constant mean curvature hypersurfaces on spheres
Abstract: In this talk we will explain the construction of all hypersurfaces with cmc and exactly two principal curvatures immersed on the unit n-dimensional sphere. All the immersed examples turned out to be invariant under a cyclic group ℤm. For each m, we will provide explicit bounds for H that warranty the existence of an embedded hypersurface with constant mean curvature H that contains the group ℤm in its group of isometries.
Recently, Ben Andrews and Haizhong Li showed that the only embedded surfaces in the three dimensional sphere are those described in this talk. Their theorem extended the proof of Lawson conjecture given by Simon Brendle. Lawson conjecture, now a theorem, states that the only minimal compact surfaces in the three dimensional sphere is the Clifford torus.