45 citations · 169 across the 17 of their papers we have counts for
7 papers · 2 filters
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…