Results 31 to 40 of about 87 (65)

On Generalized ϕ‐Recurrent (ϵ, δ)‐Trans‐Sasakian Manifolds

Chinese Journal of Mathematics, Volume 2014, Issue 1, 2014., 2014
We study generalized ϕ‐recurrent (ϵ, δ)‐trans‐Sasakian manifolds. A relation between the associated 1‐forms A and B and relation between characteristic vector field ξ and the vector fields ρ1, ρ2 for a generalized ϕ‐recurrent.
C. S. Bagewadi, Dakshayani A. Patil, P. Li, C. Yin   +3 more
wiley   +1 more source

Rigidity and Classification of Ricci Solitons on Lorentzian Hypersurfaces with Concircular Vector Fields on Minkowski Space

Mathematics
This paper examines the classification of Lorentzian hypersurfaces in Minkowski space, specifically focusing on those that are characterized as good or bad and that admit Ricci solitons with a concircular vector field.
Norah Alshehri, Mohammed Guediri
doaj   +1 more source

Characterizing ϕ(Ric)‐Vector Fields and Quasi‐Einstein Manifolds on Multiply Warped Product Manifolds

International Journal of Mathematics and Mathematical Sciences, Volume 2025, Issue 1, 2025.
We characterize multiply warped product manifolds with ϕ(Ric)‐vector fields. We give the necessary and sufficient conditions for the lift of a vector field on a factor manifold to be the ϕ(Ric)‐vector field. In terms of physical applications, the multiply generalized Robertson–Walker spacetime is considered.
Moctar Traore, Ameth Ndiaye, Mansour Sane, Ildefonso Castro   +3 more
wiley   +1 more source

Some Curvature Properties of (LCS) n‐Manifolds

Abstract and Applied Analysis, Volume 2013, Issue 1, 2013., 2013
The object of the present paper is to study (LCS) n‐manifolds with vanishing quasi‐conformal curvature tensor. (LCS) n‐manifolds satisfying Ricci‐symmetric condition are also characterized.
Mehmet Atçeken, Narcisa C. Apreutesei
wiley   +1 more source

Symmetry and pseudosymmetry properties with Ricci soliton of the Reissner-Nordström-de Sitter spacetime

Nuclear Physics B
The primary objective of the article is to investigate the symmetry and pseudosymmetry properties of the Reissner-Nordström-de Sitter (briefly, RNdS) spacetime. The secondary aim of the paper is to explore the notion of Ricci solitons in RNdS spacetimes.
Absos Ali Shaikh, Kamiruzzaman
doaj   +1 more source

Da‐Homothetic Deformation of K‐Contact Manifolds

International Scholarly Research Notices, Volume 2013, Issue 1, 2013., 2013
We study Da‐homothetic deformations of K‐contact manifolds. We prove that Da‐homothetically deformed K‐contact manifold is a generalized Sasakian space form if it is conharmonically flat. Further, we find expressions for scalar curvature of Da‐homothetically deformed K‐contact manifolds.
H. G. Nagaraja, C. R. Premalatha, A. M. Cegarra, J. L. Cieśliński   +3 more
wiley   +1 more source

The Z‐Tensor on Almost Co‐Kählerian Manifolds Admitting Riemann Soliton Structure

Advances in Mathematical Physics, Volume 2024, Issue 1, 2024.
A Riemann soliton (RS) is a natural generalization of a Ricci soliton structure on pseudo‐Riemannian manifolds. This work aims at investigating almost co‐Kählerian manifolds (ACKM) 2n+1 whose metrics are Riemann solitons utilizing the properties of the Z‐tensor.
Sunil Kumar Yadav, Sameh Shenawy, Nasser Bin Turki, Rajendra Prasad, Mohammad Mirzazadeh   +4 more
wiley   +1 more source

Geodesic mappings and concircular vector fields

, 2019
12 ...
openaire   +2 more sources

Parallel tangent deformation, concircular transformation and concurrent vector field [PDF]

Proceedings of the Japan Academy, Series A, Mathematical Sciences, 1944
Yano, Kentaro, Adati, Tyūzi
openaire   +3 more sources

ON SOME SURFACES IMMERSED IN A MANIFOLD ADMITTING A SPECIAL CONCIRCULAR VECTOR FIELD

Demonstratio Mathematica, 1977
openaire   +2 more sources