Hypersurfaces of type number two in the hyperbolic four-space and their extensions to Riemannian geometry

Abstract

In this paper we give a survey of some of our published results about the structure of three-dimensional Riemannian manifolds with one double Ricci eigenvalue and one simple Ricci eigenvalue, which is a negative constant.

Keywords

• Hypersurfaces
• number
• hyperbolic
• four-space
• their
• extensions
• Riemannian
• geometry