In this paper, we present screen semi-invariant lightlike submanifolds of golden semi-
Riemannian manifolds. We research several properties of such submanifolds and get the …

We have studied radical screen transversal lightlike submanifolds and screen trans\-versal
anti-invariant lightlike submanifolds of golden semi-Riemannian manifolds. We have …

The purpose of this paper, is the study of the generalized Cauchy-Riemannian submersions
from the indefinite almost locally conformal cosymplectic manifold onto semi-Riemannian …

We study lightlike hypersurfaces of semi-Riemannian manifolds admitting a semi-symmetric
non-metric connection whose structure vector field is tangent to the hypersurface. We prove …

In this paper, we investigate some geometrical properties of Riemannian manifolds
equipped with a semi-symmetric non-metric connection. First, it is proved that an isotropic …

We study lightlike hypersurfaces of semi-Riemannian manifolds admitting a semi-symmetric
non-metric connection whose structure vector field is tangent to the hypersurface. We obtain …