%0 Journal Article %T Rigidity theorems of Clifford Torus %A SOUSA JR. LUIZ A. M. %J Anais da Academia Brasileira de Ci¨ºncias %D 2001 %I Academia Brasileira de Ci¨ºncias %X Let M be an n-dimensional closed minimally immersed hypersurface in the unit sphere Sn + 1. Assume in addition that M has constant scalar curvature or constant Gauss-Kronecker curvature. In this note we announce that if M has (n - 1) principal curvatures with the same sign everywhere, then M is isometric to a Clifford Torus . %K minimal hypersurfaces %K scalar curvature %K principal curvatures %K Clifford Torus %U http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652001000300003