16 citations · 61 across the 7 of their papers we have counts for
7 papers
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…
Impact of projective curvature tensor in , and -gravity
Young Jin Suh, Krishnendu De, Uday Chand De
This article concerns with the characterization of a spacetime and modified gravity, such as , and -gravity equipped w…
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…
Some curvature properties of perfect fluid spacetimes
Krishnendu De, Uday Chand De, Ljubica Velimirovic
In this paper we assume that a perfect fluid is the source of the gravitational field while analyzing the solutions to the Einstein field equations.
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<…