10 citations · 12 across the 12 of their papers we have counts for
14 papers
On the curvature symmetries in lightlike hypersurfaces of an indefinite Sasakian manifold
Samuel Ssekajja
In this note, we show that a lightlike hypersurface of an indefinite Sasakian manifold, which is tangent to structure vector field is not locally symmetric, semi-symmetric or semi-…
On the structure vector field in lightlike hypersurfaces
Samuel Ssekajja
We study lightlike hypersurfaces of an indefinite almost contact metric-manifold . We prove that there are only two types of such hypersurfaces, known as ascreen and inasc…
Non-existence of certain lightlike hypersurfaces of an indefinite Sasakian manifold
Samuel Ssekajja
Here, we consider a lightlike hypersurface, tangent to the structure vector field, of an indefinite Sasakian manifold. We prove that no such a hypersurface can either have parallel…
On complex contact manifolds and their null submanifolds
Samuel Ssekajja, Ange Maloko
In the present paper, we study the geometry of certain classes of null submanifolds of indefinite complex contact manifolds. In particular, we show that quaternion null submanifold…
On the geometry of null hypersurfaces of indefinite complex contact manifolds
Samuel Ssekajja
We study the geometry of null hypersurfaces in indefinite complex contact manifolds. We prove several classification results for a variety of well-known null hypersurfaces, includi…
On contact screen conformal null submanifolds
Samuel Ssekajja
First, we prove that indefinite Sasakian manifolds do not admit any screen conformal -null submanifolds, tangent to the structure vector field. We, therefore, define a special c…
A Ricci-type flow on globally null manifolds and its gradient estimates
Mohamed H. A. Hamed, Fortuné Massamba, Samuel Ssekajja
Locally, a screen integrable globally null manifold splits through a Riemannian leaf of its screen distribution and a null curve tangent to its radical distr…
New classes of null hypersurfaces in indefinite Sasakian space-forms
Samuel Ssekajja
We introduce two classes of null hypersurfaces of an indefinite Sasakian manifold, , tangent to the characteristic vector field , called; {\it c…
Remarks on screen integrable null hypersurfaces in Lorentzian manifolds
Samuel Ssekajja
In the present paper, we show that the geometry of a screen integrable null hypersurface can be generated from an isometric immersion of a leaf of its screen distribution into the…
On total mean curvatures of foliated half-lightlike submanifolds in semi-Riemannian manifolds
Fortuné Massamba, Samuel Ssekajja
We derive total mean curvature integration formulae of a three co-dimensional foliation on a screen integrable half-lightlike submanifold, in a semi-Rie…
Higher order mean curvatures of SAC half-lightlike submanifolds of indefinite almost contact manifolds
Fortuné Massamba, Samuel Ssekajja
We introduce higher order mean curvatures of screen almost conformal (SAC) half-lightlike submanifolds of indefinite contact manifolds, admitting a semi-symmetric non-metric connec…
A note on quasi generalized CR-lightlike geometry in indefinite nearly -Sasakian manifold
Fortuné Massamba, Samuel Ssekajja
The concept of quasi generalized CR-lightlike was first introduced by the authors in [18]. In this paper, we focus on ascreen and co-screen quasi generalized CR-lightlike submanifo…
Quasi Generalized CR-lightlike submanifolds of indefinite nearly Sasakian manifolds
Fortuné Massamba, Samuel Ssekajja
In this paper, we introduce and study a new class of CR-lightlike submanifold of an indefinite nearly Sasakian manifold, called Quasi Generalized Cauchy-Riemann (QGCR) lightlike su…
Some remarks on quasi generalized CR-null geometry in indefinite nearly cosymplectic manifolds
Fortuné Massamba, Samuel Ssekajja
In [21], the authors initiated the study of quasi generalized CR (QGCR)-null submanifolds. In this paper, attention is drawn to some distributions on ascreen QGCR-null submanifolds…