Results 71 to 80 of about 130 (124)

Pseudosymmetry and curvature inheritance of the interior black hole spacetime

Physics Letters B
The notion of pseudosymmetry by Adamów and Deszcz [1] generalizes the concept of local symmetry and semisymmetry, and it serves as a model of various spacetimes. The classification of pseudosymmetric spacetimes has been studied in [2].
Absos Ali Shaikh, Foued Aloui, Kamiruzzaman, Ibrahim Al-Dayel   +3 more
doaj   +1 more source

Commuting Conditions of the k-th Cho operator with the structure Jacobi operator of real hypersurfaces in complex space forms

Open Mathematics, 2015
In this paper three dimensional real hypersurfaces in non-flat complex space forms whose k-th Cho operator with respect to the structure vector field ξ commutes with the structure Jacobi operator are classified.
Panagiotidou Konstantina, Pérez Juan de Dios   +1 more
doaj   +1 more source

Para-f -Lie groups

, 2020
Special para-f -structures on Lie groups are studied. It is shown that every para-fLie group G is the quotient of the product of an almost product Lie group and a Lie group with trivial para-f -structure by a discrete subgroup.
Andrew Bucki
core  

Symmetry and pseudosymmetry properties with Ricci soliton of the Reissner-Nordström-de Sitter spacetime

Nuclear Physics B
The primary objective of the article is to investigate the symmetry and pseudosymmetry properties of the Reissner-Nordström-de Sitter (briefly, RNdS) spacetime. The secondary aim of the paper is to explore the notion of Ricci solitons in RNdS spacetimes.
Absos Ali Shaikh, Kamiruzzaman
doaj   +1 more source

Групи на ли като четиримерни специални комплексни многообразия с норденова метрика

, 2010
Марта Теофилова - Конструиран е пример на четиримерно специално комплексно многообразие с норденова метрика и постоянна холоморфна секционна кривина чрез двупара-метрично семейство от разрешими алгебри на Ли.
Teofilova, Marta
core  

A New Symplectic Surgery: The 3-Fold Sum

, 1996
We define a symplectic surgery along positively intersecting symplectic surfaces in 4-manifolds, the generalized symplectic sum, and prove an existence theorem for the special case of a 3-fold sum.
Margaret Symington
core  

Non-supersymmetric flux compactifications of heterotic string- and M-theory [PDF]

, 2012
Held, Johannes
core   +1 more source

Secoond order parallel tensors on some paracontact manifolds

, 2017
The object of the present paper is to study the symmetric and skewsymmetric properties of a second order parallel tensor on paracontact metric (k;μ)- spaces and almost β-para-Kenmotsu (k;μ)-spaces.
Pan, Quanxiang, Liu, Ximin
core  

Curvature properties of φ-null Osserman Lorentzian S-manifolds

Open Mathematics, 2014
Brunetti Letizia, Caldarella Angelo
doaj   +1 more source

Geometric inequalities for warped product bi-slant submanifolds with a warping function. [PDF]

J Inequal Appl, 2018
Siddiqui AN, Shahid MH, Lee JW.
europepmc   +1 more source