Results 101 to 110 of about 426,506 (223)

On Zermelo's navigation problem and weighted Einstein Randers metrics [PDF]

AUT Journal of Mathematics and Computing
This paper investigates a specific form of weighted Ricci curvature known as the quasi-Einstein metric. Two Finsler metrics, $F$ and $\tilde{F}$ are considered, which are generated by navigation representations $(h, W)$ and $(F, V)$, respectively, where $
Illatra Khamonezhad, Bahman Rezaei, Mehran Gabrani   +2 more
doaj   +1 more source

On a type of almost Kenmotsu manifolds with nullity distributions

Arab Journal of Mathematical Sciences, 2017
The object of the present paper is to characterize Weyl semisymmetric almost Kenmotsu manifolds with its characteristic vector field ξ belonging to the (k,μ)′-nullity distribution and (k,μ)-nullity distribution respectively.
U.C. De, Krishanu Mandal
doaj   +1 more source

Conformal field theory with composite defect

Journal of High Energy Physics
We explore higher-dimensional conformal field theories (CFTs) in the presence of a conformal defect that itself hosts another sub-dimensional defect. We refer to this new kind of conformal defect as the composite defect.
Soichiro Shimamori
doaj   +1 more source

Conformal vector fields on pseudo-Riemannian spaces

Differential Geometry and its Applications, 1997
The authors make a study of global conformal vector fields on pseudo-Riemannian manifolds, in particular on Einstein manifolds and manifolds of constant scalar curvature. For Einstein spaces, a complete classification theorem is presented. In the more general case where the manifold has constant scalar curvature, a similar classification result is ...
Kühnel, Wolfgang, Rademacher, Hans-Bert
openaire   +2 more sources

Celestial sector in CFT: Conformally soft symmetries

SciPost Physics
We show that time intervals of width $\Delta \tau$ in 3-dimensional conformal field theories (CFT$_3$) on the Lorentzian cylinder admit an infinite dimensional symmetry enhancement in the limit $\Delta \tau → 0$.
Leonardo Pipolo de Gioia, Ana-Maria Raclariu
doaj   +1 more source

Conformal vector fields in symmetric and conformal symmetric spaces

International Journal of Mathematics and Mathematical Sciences, 1988
Consequences of the existence of conformal vector fields in (locally) symmetric and conformal symmetric spaces, have been obtained. An attempt has been made for a physical interpretation of the consequences in the framework of general relativity.
openaire   +3 more sources

Closed conformal vector fields

Journal of Differential Geometry, 1969
Tanno, Shûkichi, Weber, Waldemar C.
openaire   +2 more sources

On Conformal Vector Fields Parallel to The Observer Field

, 2008
We review a theorem by Hasse and Perlick establishing a result characterizing parallax-free cosmological models via three equivalent properties -- namely the existence of a redshift potential, the existence of a conformal vector field parallel to the observer field, and the vanishing of the shear of the observer field together with some integrability ...
Dirmeier, Alexander, Plaue, Matthias, Scherfner, Mike   +2 more
openaire   +2 more sources

2-conformal and conformal vector fields on Riemannian manifolds

Filomat
In this paper, we study 2-conformal vector fields on Riemannian manifolds. Some relations between 2-conformal vector fields, conformal vector fields, Killing and 2-Killing vector fields have been obtained. Also, relation between monotone vector fields and 2-conformal vector fields is investigated.
Ghodratallah Fasihi-Ramandi, Uday De, Shahmkhali Farzaneh   +2 more
openaire   +1 more source

Foliations Transverse to a Closed Conformal Vector Field

Results in Mathematics
In this article, we study the geometric properties of codimension one foliations on Riemannian manifolds equipped with vector fields that are closed and conformal. Apart from its singularities, these vector fields define codimension one foliations with nice geometric features, which we call Montiel Foliations.
Euripedes da Silva, Ícaro Gonçalves, Júlio Pereira   +2 more
openaire   +3 more sources