Peer-Reviewed journal indexed by Mathematical Reviews and Zentralblatt MATH.

# On The Normal Structure of a Hypersurface in a 2-Quasi Sasakian Manifold

On The Normal Structure of a Hypersurface in a 2-Quasi Sasakian Manifold

Authors

Mohit Saxena, Sahadat Ali and Nayan Goel

Abstract

Quasi Sasakian manifold have been introduced by Blair [3]. The purpose of this paper is to study the existence of the normal hypersurface of 2–Quasi Sasakian manifold in the sense of Goldberg-Yano [6]. We obtain a characterization for these hypersurfaces and also a theorem of characterization for the normal structure on a contact totally umbilical hypersurface of 2–Quasi Sasakian manifold.
Keywords: Quasi Sasakian manifold; normal structure ;totally umbilical hypersurface.