45 citations · 169 across the 17 of their papers we have counts for
10 papers · 1 filter
Characterizations of a Lorentzian Manifold with a semi-symmetric metric connection
Uday Chand De, Krishnendu De, Sinem Güler
In this article, we characterize a Lorentzian manifold with a semi-symmetric metric connection. At first, we consider a semi-symmetric metric connection whose curvatu…
Perfect fluid spacetimes and -almost yamabe solitons
Krishnendu De, Uday Chand De, Aydin Gezer
In this article, we presumed that a perfect fluid is the source of the gravitational field while analyzing the solutions to the Einstein field equations. With this new and creative…
Characterizations of a spacetime of quasi-constant sectional curvature and -gravity
Uday Chand De, Krishnendu De, Fusun Ozen Zengin +1
The main aim of this article is to investigate a spacetime of quasi-constant sectional curvature. At first, the existence of such a spacetime is established by several examples. We…
Investigations on a Riemannian manifold with a semi-symmetric non-metric connection and gradient solitons
Krishnendu De, Uday Chand De, Aydin Gezer
This article carries out the investigation of a three-dimensional Riemannian manifold endowed with a semi-symmetric type non-metric connection. Firstly, we construct a non-tr…
Characterizations of generalized Robertson-Walker spacetimes concerning gradient solitons
Krishnendu De, Mohammad Nazrul Islam Khan, Uday Chand De
In this article, we examine gradient type Ricci solitons and -quasi Einstein solitons in generalized Robertson-Walker () spacetimes. Besides, we demonstrate that in thi…
Almost co-Kähler manifolds and -quasi-Einstein solitons
Krishnendu De, Mohammad Nazrul Islam Khan, Uday Chand De
The present paper aims to investigate -quasi-Einstein metrices on almost co-Kähler manifolds . It is proven that if a -almost co-Kähler manifold with $κ<…
Conformal vector fields on almost Kenmotsu manifolds
Uday Chand De, Arpan Sardar, Krishnendu De
In this paper, first we consider that the conformal vector field is identical with the Reeb vector field and next, assume that is pointwise collinear…
Characterizations of Perfect fluid spacetimes obeying -gravity equipped with different gradient solitons
Krishnendu De Young Jin Suh, Uday Chand De
The prime object of this article is to study the perfect fluid spacetimes obeying -gravity, when -Ricci solitons, gradient -Ricci solitons, gradient Einstein…
A note on gradient Solitons on two classes of almost Kenmotsu Manifolds
Krishnendu De, Uday Chand De
The purpose of the article is to characterize \textbf{gradient -quasi Einstein solitons} within the framework of two classes of almost Kenmotsu Manifolds. Finally, we consid…
A note on Almost Riemann Soliton and gradient almost Riemann soliton
Krishnendu De, Uday Chand De
The quest of the offering article is to investigate \emph{almost Riemann soliton} and \emph{gradient almost Riemann soliton} in a non-cosymplectic normal almost contact metric mani…