Results 61 to 70 of about 4,519,740 (175)

Weakly Ricci symmetric spacetimes

open access: yes, 2017
The objective of the present paper is to study weakly Ricci symmetric spacetimes. Among others, we prove that a weakly Ricci symmetric spacetime obeying Einstein’s field equation without cosmological constant represents stiff matter.
Avik De, Pradip Majhi
core   +1 more source

On Some Classes of Weakly Projective Symmetric Manifolds

open access: yes, 2016
[[abstract]]The object of the present paper is to study some classes of weakly projective symmetric manifolds (WPS)n. At first some properties of the 1-forms of (WPS)n(n > 2) have been studied. Next we consider conformally flat (WPS)n(n > 2).
Prajjwal Pal
core  

On weakly symmetric manifolds with a type of semi-symmetric non-metric connection

open access: yes, 2011
The object of the present paper is to study weakly symmetric manifolds admitting a type of semi-symmetric non-metric ...
YILMAZ, HÜLYA   +1 more
core   +1 more source

On Weakly Projective Symmetric Manifolds

open access: yes, 2009
The object of the present paper is to study weakly projective symmetric manifolds and its decomposability with several non-trivial examples. Among others it is shown that in a decomposable weakly projective symmetric manifold both the decompositions are ...
Hui, Shyamal Kumar, Shaikh, A. A.
core   +1 more source

New Extended Categories of Fixed Point Results for Weakly Compatible Contractions Mappings of Integral Type

open access: yesProceedings of the International Conference on Applied Innovations in IT
The major goal of introduce article is to establish the uniqueness of different classes of common fixed point theorems under the influence of other enhanced sorts of extended contractions of integral type in 〖 D〗_d^*-Symmetric spaces.
Abduljabar K. Abbas   +2 more
doaj   +1 more source

A Note on Weakly Symmetric Rings

open access: yes, 1974
T. Nakayama showed in [2, Theorem 13] that symmetric algebras have the property that the left and right annihilators of their two-sided ideals are equal. He also gave examples [2, p.
P. J. Horn
core   +1 more source

A weakly Stegall space that is not a Stegall space [PDF]

open access: yes, 2002
A topological space X is said to belong to the class of Stegall (weakly Stegall) spaces if for every Baire (complete metric) space B and minimal usco φ : B2X, φ is single-valued at some point of B.
Moors, Warren B.   +3 more
core   +1 more source

Minimal electroweak baryogenesis via domain walls

open access: yesJournal of High Energy Physics
The Standard Model extended by a real scalar singlet S with an approximate ℤ 2 symmetry offers a minimal framework for realizing electroweak baryogenesis (EWBG) during a first-order electroweak phase transition. In this work, we explore a novel mechanism
Jacopo Azzola   +2 more
doaj   +1 more source

(Super) gravity from positivity

open access: yesJournal of High Energy Physics
We investigate whether the effective theory for isolated, massive, and weakly interacting spin-3/2 particles is compatible with causality and unitarity — i.e., the positivity of scattering amplitudes. We find no solution to positivity constraints, except
Brando Bellazzini   +3 more
doaj   +1 more source

Long-range interacting many-body systems in the irrep basis

open access: yesPhysical Review Research
Spin models featuring infinite-range, homogeneous all-to-all interactions can be efficiently described due to the existence of a symmetry-restricted Hilbert subspace and an underlying classical phase-space structure.
Ivy Pannier-Günther   +3 more
doaj   +1 more source

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