Results 231 to 240 of about 723,003 (246)

On weakly symmetric and weakly Ricci-symmetric \(K\)-contant manifolds

2000
The notions of weakly symmetric and weakly Ricci-symmetric Riemannian manifolds were given and studied by \textit{L. Tamássy and T. Q. Binh} [Proc. Coll. Differential geometry and its applications, Eger 1989, North. Holland Publ. Comp., Colloq. Math. Soc. János Bolyai 56, 663--670 (1992; Zbl 0791.53021)].
De, U. C., Tran, Quoc Binh, Shaikh, A. A.   +2 more
openaire   +1 more source

On Weakly $W_{2}$-Symmetric Manifolds

Sarajevo Journal of Mathematics
In the present paper we introduce a type of non-flat Riemannian manifold called weakly $W_{2}$-symmetric manifolds and study their geometric properties. The existence of such manifolds is shown by several non-trivial examples.   2000 Mathematics Subject Classification.
A. A. Shaikh, Sanjib Kumar Jana, S. Eyasmin   +2 more
openaire   +1 more source

On weakly conformally symmetric pseudo-Riemannian manifolds

Reviews in Mathematical Physics, 2017
In this paper, we study the properties of weakly conformally symmetric pseudo- Riemannian manifolds focusing particularly on the [Formula: see text]-dimensional Lorentzian case. First, we provide a new proof of an important result found in literature; then several new others are stated.
Mantica, Carlo Alberto, Suh, Young Jin
openaire   +3 more sources

On Weakly Cyclic Generalized Z-Symmetric Manifolds

National Academy Science Letters, 2020
In this paper, we define a (0,2)-type symmetric tensor Z and called it a generalized Z tensor. We study weakly cyclic generalized Z-symmetric manifold and prove that it is a generalized quasi-Einstein manifold. We have obtained a condition for vanishing of sum of 1-forms. We further find a condition to be a Ricci semisymmetric manifold.
openaire   +1 more source

ON SPECIAL WEAKLY CONHARMONIC SYMMETRIC MANIFOLDS

jnanabha
The notions of a weakly symmetric and weakly projective symmetric Riemannian manifolds have been introduced by Tamassy and Binh [20, 21] and then after studied by so many authors [5, 12, 13, 14, 15, 16, 17]. Recently, Singh and Khan [19] introduced the notion of Special weakly symmetric Riemannian manifolds and denoted such manifold by (SW S)n.
Shyam Kishor, Anoop Kumar Verma
openaire   +1 more source

Weakly symmetric Riemannian manifolds with reductive isometry group

Sbornik: Mathematics, 2004
A Riemannian manifold \(M\) is said to be weakly symmetric if any two points in \(M\) can be interchanged by an isometry. Clearly any symmetric space is weakly symmetric. In the present paper the author derives a classification, up to local isomorphism, of all non-symmetric weakly symmetric Riemannian manifolds with a reductive isometry group. The main
openaire   +2 more sources

WITHDRAWN: On weakly symmetric and weakly Ricci-symmetric Kenmotsu manifolds

Applied Mathematics Letters, 2007
Lovejoy S. Das, Mohd. Nazrul Islam Khan
openaire   +1 more source

On Generalized Weakly Symmetric α-Cosymplectic Manifolds

Hacettepe Journal of Mathematics and Statistics, 2021
Selahattin Beyendi, Mustafa Yildirim
exaly  

On Weakly Cyclic Z Symmetric Manifolds

Acta Mathematica Hungarica, 2015
Uday Chand De
exaly  

Pseudo-Riemannian Weakly Symmetric Manifolds

Annals of Global Analysis and Geometry, 2012
Joseph A. Wolf, Zhiqi Chen
exaly