Results 251 to 260 of about 613,404 (287)

Weakly symmetric spaces and bounded symmetric domains

Transformation Groups, 1997
Let \((M= G/K,g)\) be a homogeneous Riemannian manifold and \(I(M,g)\) its isometry group. Following A. Selberg, \((M,g)\) is said to be weakly symmetric if there exists an element \(\mu\in I(M,g)\) satisfying \(\mu G\mu^{-1} =G\) and \(\mu^2 \in G\) such that for any given \(x,y \in M\), there exists a \(\gamma\in G\) such that \(\gamma x= \mu y\) and
Hiêú Nguyen
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Weakly conformally symmetric manifolds

Colloquium Mathematicum, 2017
We study the properties of weakly conformally symmetric pseudo-Riemannian manifolds, with particular emphasis on the 4-dimensional Lorentzian case. We provide a decomposition of the conformal curvature tensor in dimensions n ≥ 5. Moreover, some identities involving two particular covectors are stated; for example it is proven that under certain ...
C. A. Mantica, Y. J. Suh
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A note on weakly symmetric manifolds

, 2014
Summary: The object of the present paper is to determine the nature of the associated \(1\)-forms of a weakly symmetric manifold.
Mantica, Carlo Alberto, Chand De, Uday
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On Weakly Symmetric Spaces

Acta Mathematica Hungarica, 2000
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Bandyopadhyay, S., De, U. C.
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WEAKLY SYMMETRIC FINSLER SPACES

Communications in Contemporary Mathematics, 2010
In this paper, we introduce the notion of weakly symmetric Finsler spaces and study some geometrical properties of such spaces. In particular, we prove that each maximal geodesic in a weakly symmetric Finsler space is the orbit of a one-parameter subgroup of the full isometric group.
Deng, Shaoqiang, Hou, Zixin
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On weakly symmetric and weakly Ricci symmetric warped product manifolds

Publicationes Mathematicae Debrecen, 2012
This paper is concerned with some results on weakly symmetric and weakly Ricci symmetric warped product manifolds. We prove the necessary and su-ci- ent condition for a warped product manifold to be weakly symmetric and weakly Ricci symmetric. On the basis of these results two proper examples of warped product weakly symmetric and weakly Ricci ...
ABSOS ALI SHAIKH, HARADHAN KUNDU
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Generalized weakly symmetric Sasakian manifolds

2023
Summary: In this parer, we give a necessary condition for Sasakian manifolds to be generalized weakly symmetric. We prove the odd-dimensional spheres are the only generalized weakly symmetric Sasakian manifolds. Then, we show that generalized weakly Ricci-symmetric Sasakian manifolds are Einstein.
Pirhadi, Vahid, Fasihi-Ramandi, Ghodratallah, Azami, Shahroud   +2 more
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Generalized weakly symmetric rings

Journal of Pure and Applied Algebra, 2014
An associative ring \(R\) with identity is called generalized weakly symmetric (GWS) if for any \(a,b,c\in R\), \(abc=0\) implies that the element \(bac\) is nilpotent. Commutative rings, reduced rings and symmetric rings are all GWS. The author establishes several interesting results on GWS rings, such as: (1) a ring \(R\) is GWS if and only if the ...
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Weakly symmetric algebras of Euclidean type

Journal für die reine und angewandte Mathematik (Crelles Journal), 2005
The paper deals with the problem of a classification of selfinjective representation-infinite domestic (finite-dimensional) algebras over an algebraically closed field \(K\). It is known from [(*) \textit{A. Skowroński}, Math. Ann. 285, No. 2, 177-199 (1989; Zbl 0653.16021)] that the class of selfinjective representation-infinite domestic algebras ...
Bocian, Rafał, Skowroński, Andrzej
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Weakly Symmetric Fix-Free Codes

IEEE Transactions on Information Theory, 2014
Bidirectional decoding improves the error resilience of the fix-free codes, which is important in some applications like video coding. However, in general, two separate decoders must be designed for forward and backward decoding and hence, the cost of decoding is almost doubled.
Adel Aghajan, Mohammadali Khosravifard
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