Results 61 to 70 of about 1,195,827 (191)

Characterizations of the Total Space (Indefinite Trans-Sasakian Manifolds) Admitting a Semi-Symmetric Metric Connection

open access: yesAxioms, 2018
We investigate recurrent, Lie-recurrent, and Hopf lightlike hypersurfaces of an indefinite trans-Sasakian manifold with a semi-symmetric metric connection. In these hypersurfaces, we obtain several new results.
Dae Ho Jin, Jae Won Lee
doaj   +1 more source

Extension of m-Symmetric Hilbert Space Operators

open access: yesJournal of Mathematics, 2022
We introduce a new class of operators, which we will call the class of P-quasi-m-symmetric operators that includes m-symmetric operators and k-quasi m-symmetric operators.
Hadi Obaid Alshammari
doaj   +1 more source

Homogeneous Poisson Structures on Loop Spaces of Symmetric Spaces

open access: yesSymmetry, Integrability and Geometry: Methods and Applications, 2008
This paper is a sequel to [Caine A., Pickrell D., Int. Math. Res. Not., to appear, arXiv:0710.4484], where we studied the Hamiltonian systems which arise from the Evens-Lu construction of homogeneous Poisson structures on both compact and noncompact type
Doug Pickrell
doaj   +1 more source

Generalized Sasakian-Space-Forms with Projective Curvature Tensor

open access: yesDemonstratio Mathematica, 2014
The object of the present paper is to study Ф-projectively flat generalized Sasakian-space-forms, projectively locally symmetric generalized Sasakian-space-forms and projectively locally Ф-symmetric generalized Sasakian-space-forms.
Sarkar A., Akbar Ali
doaj   +1 more source

Extreme and exposed symmetric bilinear forms on the space ${\mathcal L}_{s}(^2 l_{\infty}^2)$

open access: yesKarpatsʹkì Matematičnì Publìkacìï, 2020
We classify extreme points and exposed points of the unit ball of the space of bilinear symmetric forms on the real Banach space of bilinear symmetric forms on $l_{\infty}^2.$ It is shown that for this case, the set of extreme points is equal to the set ...
Sung Guen Kim
doaj   +1 more source

$L^p$-Spectral theory of locally symmetric spaces with $Q$-rank one

open access: yes, 2007
We study the $L^p$-spectrum of the Laplace-Beltrami operator on certain complete locally symmetric spaces $M=\Gamma\backslash X$ with finite volume and arithmetic fundamental group $\Gamma$ whose universal covering $X$ is a symmetric space of non-compact
A. Borel   +22 more
core   +2 more sources

Metric and Symmetric Spaces [PDF]

open access: yesProceedings of the American Mathematical Society, 1974
In this paper we give an alternative proof, without reference to Urysohn’s lemma, of the metrization theorem of Bing [2], Nagata [6], and Smirnov [8] via the theory of symmetric spaces as developed by H. Martin in [5].
openaire   +1 more source

Hamiltonian Flows of Curves in G/SO(N) and Vector Soliton Equations of mKdV and Sine-Gordon Type

open access: yesSymmetry, Integrability and Geometry: Methods and Applications, 2006
The bi-Hamiltonian structure of the two known vector generalizations of the mKdV hierarchy of soliton equations is derived in a geometrical fashion from flows of non-stretching curves in Riemannian symmetric spaces G/SO(N).
Stephen C. Anco
doaj  

Note on Arens regularity of symmetric tensor products

open access: yesKarpatsʹkì Matematičnì Publìkacìï, 2014
We investigate symmetric regularity of sums of symmetric tensor products of Banach spaces and Arens regularity of symmetric tensor products of Banach algebras. An example for the Hilbert space is obtained.
O.G. Taras, A.V. Zagorodnyuk
doaj   +1 more source

Geometric characterization of $L_1$-spaces

open access: yes, 2013
The paper is devoted to a description of all strongly facially symmetric spaces which are isometrically isomorphic to $L_1$-spaces. We prove that if $Z$ is a real neutral strongly facially symmetric space such that every maximal geometric tripotent from ...
Ibragimov, Mukhtar   +2 more
core   +1 more source

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