Department of Mathematics, Faculty of Science, Josai University, Sakado, Saitama 350-0295, Japan ; Department of Mathematics, Saga University, Saga 840-0027, Japan
Abstract:
In this paper, we prove that an -dimensional closed minimal hypersurface with Ricci curvature of a unit sphere is isometric to a Clifford torus if , where is the squared norm of the second fundamental form of .