Results 41 to 50 of about 1,195,827 (191)

DDVV Inequality on Submanifolds Coupled with a Slant Factor in Quaternionic Kaehler Manifolds

open access: yesAxioms
This work aims to provide generalized Wintgen inequalities for slant submanifolds embedded in quaternionic space forms, taking into consideration both semi-symmetric metric and semi-symmetric non-metric connections.
Rawan Bossly   +4 more
doaj   +1 more source

On the transverse Scalar Curvature of a Compact Sasaki Manifold

open access: yesComplex Manifolds, 2014
We show that the standard picture regarding the notion of stability of constant scalar curvature metrics in Kähler geometry described by S.K. Donaldson [10, 11], which involves the geometry of infinitedimensional groups and spaces, can be applied to the ...
He Weiyong
doaj   +1 more source

Weakly Ricci-Symmetric Space-Times and f (R,G) Gravity

open access: yesMathematics
In the present article, we classify conformally flat weakly Ricci-symmetric space-times and obtain that they represent Robertson–Walker space-times. Furthermore, we provethat a Ricci-recurrent weakly Ricci-symmetric space-time is static and a Ricci-semi ...
Yanlin Li, Uday Chand De, Krishnendu De
doaj   +1 more source

On Conformal and Concircular Diffeomorphisms of Eisenhart’s Generalized Riemannian Spaces

open access: yesMathematics, 2019
We consider conformal and concircular mappings of Eisenhart’s generalized Riemannian spaces. We prove conformal and concircular invariance of some tensors in Eisenhart’s generalized Riemannian spaces.
Miloš Z. Petrović   +2 more
doaj   +1 more source

Pseudo-Riemannian Symmetries on Heisenberg groups

open access: yes, 2014
The notion of $\Gamma$-symmetric space is a natural generalization of the classical notion of symmetric space based on $\Z_2$-grading of Lie algebras.
Goze, Michel   +2 more
core   +2 more sources

On coincidence and fixed-point theorems in fuzzy symmetric spaces [PDF]

open access: yesJournal of Hyperstructures, 2012
In this paper, common fixed point theorems have been studied in fuzzy symmetric space instead of fuzzy metric space.Using weakly compatibility, property ( E.A.), we have generalized the common fixed point theorems for a pair of weakly compatible self ...
T. K. Samanta   +4 more
doaj   +1 more source

On certain modules of covariants in exterior algebras

open access: yes, 2015
We study the structure of the space of covariants $B:=\left(\bigwedge (\mathfrak g/\mathfrak k)^*\otimes \mathfrak g\right)^{\mathfrak k},$ for a certain class of infinitesimal symmetric spaces $(\mathfrak g,\mathfrak k)$ such that the space of ...
A Borel   +11 more
core   +1 more source

An Interpolation Theorem for Quasimartingales in Noncommutative Symmetric Spaces

open access: yesAdvances in Mathematical Physics, 2021
Let E be a separable symmetric space on 0,∞ and EM the corresponding noncommutative space. In this paper, we introduce a kind of quasimartingale spaces which is like but bigger than EM and obtain the following interpolation result: let E^M be the space ...
Congbian MA, Guoxi Zhao
doaj   +1 more source

Examples of a complex hyperpolar action without singular orbit

open access: yesCubo, 2010
The notion of a complex hyperpolar action on a symmetric space of non-compact type has recently been introduced as a counterpart to the hyperpolar action on a symmetric space of compact type.
Naoyuki Koike
doaj  

Generalized Difference Lacunary Weak Convergence of Sequences [PDF]

open access: yesSahand Communications in Mathematical Analysis
In this paper, we introduce the concept of generalized difference lacunary weak convergence of sequences. Using the concept of difference operator, we have introduced some new classes of sequences. We investigated several of its algebraic and topological
Bibhajyoti Tamuli, Binod Tripathy
doaj   +1 more source

Home - About - Disclaimer - Privacy