In this paper, we define and study both slant lightlike submanifolds and screen slant lightlike submanifolds of an indefinite Sasakian manifold. We provide non-trivial examples and obtain necessary and sufficient conditions for the existence of a slant lightlike submanifold.

Bu makaleye şu şekilde atıfta bulunabilirsiniz(To cite to this article): Erdoğan F. E. ve Yıldırım C.,"Altın Riemann manifoldlarının tamamen umbilik yarı-invaryant altmanifoldları üzerine bir çalışma", Politeknik Dergisi, 21(4): 967-970, (2018). Politeknik Dergisi, 2018; 21(4) : 967-970 Journal of Polytechnic, 2018; 21 (4)

No abstract

In the present paper we give conditions for screen semi invariant lightlike submanifolds of a semi-Riemannian product manifold to have degenerate planar normal sections. Also we give sufficient and efficient conditions for screen invariant and screen anti invariant lightlike submanifold of a semi-Riemanniann product manifold to have non-degenerate planar normal sections.

No abstract