Results 81 to 90 of about 205,228 (147)

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

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

Gradient Ricci solitons with a conformal vector field

Journal of Geometry, 2018
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +3 more sources

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

A note on conformal Ricci flow [PDF]

, 2014
In this note we study the conformal Ricci flow that Arthur Fischer introduced in 2004. We use DeTurck's trick to rewrite the conformal Ricci flow as a strong parabolic-elliptic partial differential equation.
Zheng, Yu, Lu, Peng, Qing, Jie
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

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

Instantaneously complete Ricci flows on surfaces [PDF]

The intention of this thesis is to give a survey of instantaneously complete Ricci flows on surfaces, focussing on the existence and uniqueness of its Cauchy problem.
Giesen, Gregor
core  

Geometry of Almost Conformal Ricci Solitons on K-Contact Manifolds

Ukrainian Mathematical Journal
UDC 515.1 We study geometric aspects of an almost conformal Ricci soliton and an almost conformal gradient Ricci soliton on K-contact manifolds. Among others, we first obtain the nature of almost conformal Ricci soliton under the conditions: (i) the potential vector field is a contact vector field, and (ii) the potential vector field is pointwise ...
Akhilesh Yadav, Tarun Saxena
openaire   +1 more source