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 A semi-Riemannian manifold of quasi-constant curvature admits some half lightlike submanifolds Bull. Korean Math. Soc. 2013 Vol. 50, No. 3, 1041-1048 https://doi.org/10.4134/BKMS.2013.50.3.1041Printed May 31, 2013 Dae Ho Jin Dongguk University Abstract : In this paper, we study the curvature of a semi-Riemannian manifold $\widetilde{M}$ of quasi-constant curvature admits some half lightlike submanifolds $M$. The main result is two characterization theorems for $\widetilde{M}$ admits extended screen homothetic and statical half lightlike submanifolds $M$ such that the curvature vector field of $\widetilde{M}$ is tangent to $M$. Keywords : extended screen homothetic, statical, half lightlike submanifold, semi-Riemannian manifold of quasi-constant curvature MSC numbers : Primary 53C25, 53C40, 53C50 Downloads: Full-text PDF