Results 81 to 90 of about 222 (146)

RICCI ALMOST SOLITONS ON RIEMANNIAN MANIFOLDS

, 2019
[[abstract]]The present paper deals with the study of Riemannian mani-folds whose metric is Ricci almost soliton with a conformal Killing vector field.
Akshoy Patra, Shyamal Kumar Hui
core  

From Modified Newtonian Dynamics to Superfluid Vacuum Theory. [PDF]

Entropy (Basel), 2022
Scott TC.
europepmc   +1 more source

Ricci solitons on para-Kähler manifolds

Extracta Mathematicae, 2019
The main purpose of the paper is to study the nature of Ricci soliton on para-Kähler manifolds satisfying some certain curvature conditions. In particular, if we consider certain pseudosymmetric and parallel symmetric tensor on para-Kähler manifolds we
Sunil Kumar Yadav
doaj  

Generalized Cross-Curvature Solitons of 3D Lorentzian Lie Groups

Axioms
We investigate left-invariant generalized cross-curvature solitons on simply connected three-dimensional Lorentzian Lie groups. Working with the assumption that the contravariant tensor Pij (defined from the Ricci tensor and scalar curvature) is ...
Mehdi Jafari
doaj   +1 more source

ON RICCI-BOURGUIGNON h-ALMOST SOLITONS IN RIEMANNIAN MANIFOLDS

, 2020
In this paper, we shall give some structure equations for RB h-almost solitons which generalize previous results for Ricci almost solitons. As a consequence of these equations we also derive an integral formula for the compact gradient RB h-almost ...
Soylu, Yasemin
core   +1 more source

Almost soliton duality

, 2015
Gradient Ricci almost solitons were introduced by Pigola, Rigoli, Rimoldi and Setti [20]. They are defined as solitons except that the metric coefficient is allowed to be a smooth function rather than a constant.
Maschler, Gideon
core   +1 more source

Analysis of the Quasi-Concircular Curvature Tensor on Sequential Warped Product Manifolds

Mathematics
This paper investigates the quasi-concircular curvature tensor on sequential warped product manifolds, which extend the classical singly warped product structure.
Rajesh Kumar, Sameh Shenawy, Johnson Lalrohlua, Hanan Alohali, Carlo Mantica   +4 more
doaj   +1 more source

Geometry of Ricci–Bourguignon Solitons on Mixed Doubly Sequential Warped Products: Existence, Classification, and Cosmological Implications

Axioms
We investigate Ricci–Bourguignon solitons on mixed doubly sequential warped product manifolds. Necessary and sufficient conditions for the existence of such solitons are established, and their implications for Einstein manifolds are analyzed.
Ayman Elsharkawy, Anis Ben Ghorbal, Majdah Mohammed Badr, Uday Chand De   +3 more
doaj   +1 more source

About rigidity of gradient almost Ricci Soliton

, 2017
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPESThis work is based on [1] and aims to show a result of rigidity for gradient almost Ricci soliton. We will prove that an almost Ricci soliton gradient with nonnegative scalar curvature,
Gomes, Maria Francisca de Sousa
core  

Modified F(R,T)-Gravity Model Coupled with Magnetized Strange Quark Matter Fluid

Mathematics
This research note presents the properties of the F(R,T)-gravity model in combination with magnetized strange quark matter. We obtain the equation of state for the magnetized strange quark matter in the F(R,T)-gravity model endowed with the Lagrangian ...
Mohd Danish Siddiqi, Meraj Ali Khan, Ibrahim Al-Dayel   +2 more
doaj   +1 more source