Perfect fluid spacetimes and -almost Yamabe solitons

K De, UC De, A Gezer - Turkish Journal of Mathematics, 2023 - journals.tubitak.gov.tr
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 approach …

[HTML][HTML] Novel theorems for a Bochner flat Lorentzian Ka¨ hler space-time manifold with η-Ricci-Yamabe solitons

BB Chaturvedi, P Bhagat, MNI Khan - Chaos, Solitons & Fractals: X, 2023 - Elsevier
In the current work, we examine η-Ricci-Yamabe solitons in a Bochner flat Lorentzian K a¨
hler space-time manifolds. We have addressed various circumstances for Ricci-Yamabe …

h-Almost Ricci–Yamabe Solitons in Paracontact Geometry

UC De, MNI Khan, A Sardar - Mathematics, 2022 - mdpi.com
In this article, we classify h-almost Ricci–Yamabe solitons in paracontact geometry. In
particular, we characterize para-Kenmotsu manifolds satisfying h-almost Ricci–Yamabe …

Isometries on almost Ricci–Yamabe solitons

M Khatri, C Zosangzuala, JP Singh - Arabian Journal of Mathematics, 2023 - Springer
The purpose of the present paper is to examine the isometries of almost Ricci–Yamabe
solitons. Firstly, the conditions under which a compact gradient almost Ricci–Yamabe soliton …

Characterizations of generalized Robertson-Walker spacetimes concerning gradient solitons

K De, MNI Khan, UC De - Heliyon, 2024 - cell.com
In this article, we examine gradient type Ricci solitons and\(m, τ\)-quasi Einstein solitons in
generalized Robertson-Walker (GRW) spacetimes. Besides, we demonstrate that in this …

ζ-Conformally Flat LP-Kenmotsu Manifolds and Ricci–Yamabe Solitons

A Haseeb, M Bilal, SK Chaubey, AAH Ahmadini - Mathematics, 2022 - mdpi.com
In the present paper, we characterize m-dimensional ζ-conformally flat LP-Kenmotsu
manifolds (briefly,(LPK) m) equipped with the Ricci–Yamabe solitons (RYS) and gradient …

Characterizations of spacetimes admitting Ricci–Yamabe solitons

A Sardar, UC De - International Journal of Geometric Methods in …, 2024 - World Scientific
In this paper, we investigate Ricci–Yamabe solitons (RYSs) and gradient Ricci–Yamabe
solitons (gradient RYSs) in generalized Robertson–Walker (GRW) spacetimes. At first, we …

Almost Ricci–Yamabe solitons on almost Kenmotsu manifolds

M Khatri, JP Singh - Asian-European Journal of Mathematics, 2023 - World Scientific
This paper examines almost Kenmotsu manifolds (briefly, AKMs) endowed with the almost
Ricci–Yamabe solitons (ARYSs) and gradient ARYSs. The condition for an AKM with ARYS …

Almost Ricci–Yamabe soliton on contact metric manifolds

M Khatri, JP Singh - Arab Journal of Mathematical Sciences, 2024 - emerald.com
Purpose This paper aims to study almost Ricci–Yamabe soliton in the context of certain
contact metric manifolds. Design/methodology/approach The paper is designed as follows …

Conformal vector fields on almost Kenmotsu manifolds

UC De, A Sardar, K De - Afrika Matematika, 2023 - Springer
In this paper, first we consider that the conformal vector field X is identical with the Reeb
vector field ς and next, assume that X is pointwise collinear with the Reeb vector field ς; in …