Results 21 to 30 of about 613,404 (287)

Pseudo-Riemannian weakly symmetric manifolds [PDF]

Annals of Global Analysis and Geometry, 2011
Nine ...
Chen, Zhiqi, Wolf, Joseph A.
openaire   +3 more sources

On weakly and pseudo concircular symmetric structures on a Riemannian manifold [PDF]

, 2008
summary:In this paper, we examine the properties of hypersurfaces of weakly and pseudo concircular symmetric manifolds and we give an example for these ...
Özen Zengin, Füsun, Altay Demirbağ, Sezgin   +1 more
core   +1 more source

Lasing With Resonant Feedback in Weakly Modulated Parity-Time Symmetric Lattices

IEEE Photonics Journal, 2018
We report on the lasing action in weakly modulated parity-time (PT) symmetric lattices. At the exceptional point in PT-symmetric lattices, the amplitude and phase of unidirectionally scattered waves are independently and flexibly determined by the PT ...
Xue-Feng Zhu, Shu-Huan Xie
doaj   +1 more source

Common Fixed Points of Generalized Contractive Hybrid Pairs in Symmetric Spaces

Fixed Point Theory and Applications, 2009
Several fixed point theorems for hybrid pairs of single-valued and multivalued occasionally weakly compatible maps satisfying generalized contractive conditions are established in a symmetric space.
Abdul Rahim Khan, Mujahid Abbas
doaj   +2 more sources

Bounds for the Z-eigenpair of general nonnegative tensors

Open Mathematics, 2016
In this paper, we consider the Z-eigenpair of a tensor. A lower bound and an upper bound for the Z-spectral radius of a weakly symmetric nonnegative irreducible tensor are presented.
Liu Qilong, Li Yaotang
doaj   +1 more source

Weakly compact embedding of non-commutative symmetric spaces [PDF]

E-Journal of Analysis and Applied Mathematics
In this paper, we prove that the embeddings of certain well-known symmetric spaces are weakly compact. Our main results concern noncommutative Lorentz and Marcinkiewicz spaces on finite von Neumann algebras.
Olga S. Sadovskaya
doaj   +1 more source

A New Efficient Method for Solving System of Weakly Singular Fractional Integro-Differential Equations by Shifted Sixth-Kind Chebyshev Polynomials

Journal of Mathematics, 2022
In this paper, a new approach for solving the system of fractional integro-differential equation with weakly singular kernels is introduced. The method is based on a class of symmetric orthogonal polynomials called shifted sixth-kind Chebyshev ...
S. Yaghoubi, H. Aminikhah, K. Sadri
doaj   +1 more source

Weakly Symmetrically Continuous Functions

, 2014
We extend the definition of weak symmetric continuity to be applicable for functions defined on any nonempty subset of $\R$. Then we investigate basic properties of weakly symmetrically continuous functions and compare them with those of symmetrically continuous functions and weakly continuous functions. Several examples are also given.
Pongsriiam, Prapanpong, Thongsiri, Teraporn   +1 more
openaire   +3 more sources

A new Z-eigenvalue localization set for tensors

Journal of Inequalities and Applications, 2017
A new Z-eigenvalue localization set for tensors is given and proved to be tighter than those in the work of Wang et al. (Discrete Contin. Dyn. Syst., Ser. B 22(1):187-198, 2017).
Jianxing Zhao
doaj   +1 more source

Riemann solitons on generalized weakly ω-symmetric α-cosymplectic manifolds [PDF]

Surveys in Mathematics and its Applications, 2021
Generalized quasi-conformal curvature tensor (ω-tensor) has the flavor of conformal, conharmonic, concircular, projective, m-projective, W1-curvature, W2-curvature and W4-curvature tensors.
Sabina Eyasmin, Kanak Kanti Baishya, Manoj Ray Bakshi   +2 more
doaj