Results 61 to 70 of about 680 (80)

Two-jets of conformal fields along their zero sets

Open Mathematics, 2012
Derdzinski Andrzej
doaj   +1 more source

Geometric properties of almost pure metric plastic pseudo-Riemannian manifolds. [PDF]

Heliyon
Karaman C, Gezer A, Khan MNI, Ucan S.
europepmc   +1 more source

Gluing constructions for Lorentzian length spaces. [PDF]

Manuscr Math
Beran T, Rott F.
europepmc   +1 more source

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Equiform spacelike Smarandache curves of anti-eqiform Salkowski curve according to equiform frame

, 2021
In this paper, we construct the equiform spacelike Smarandache curves of spacelike anti-equiform Salkowski curves with timelike binormal according to equiform frame in R3 1. Furthermore, we calculate the equiform Frenet apparatus of these curves. Finally,
E. Solouma
semanticscholar   +1 more source

Slant Curve in Lorentzian BCV Spaces

, 2020
The aim of this study is to examine the slant curves in Lorentzian manifolds with BCV (Bianchi-Cartan-Vranceanu) metrics. A practical form of the directional derivative in the presence of the BCV metrics is presented.
Abdullah Yıldırım
semanticscholar   +1 more source

A Note on Osserman Lorentzian Manifolds

, 1997
Let p be a point of a Lorentzian manifold M. We show that if M is spacelike Osserman at p, then M has constant sectional curvature at p; similarly, if M is timelike Osserman at p, then M has constant sectional curvature at p. The reverse implications are
N. Blažić, N. Bokan, P. Gilkey
semanticscholar   +1 more source

Recent developments in pseudo-Riemannian holonomy theory

, 2010
We review recent results in the theory of holonomy groups of pseudo-Riemannian manifolds, i.e. manifolds with indefinite metrics. First we present the classification of Lorentzian holonomy groups, that is a list of possible groups and metrics which ...
A. Galaev, T. Leistner
semanticscholar   +1 more source

Curvature via the de Sitter’s Space-Time

Sarajevo Journal of Mathematics
We define the central curvature and the total central curvature of a closed curve in a Lorentz $(n + 1)$--space. In addition, we obtain estimates for the total central curvatures of spacelike pure polygons. The study is done by using the n-dimensional de
G. Desideri
semanticscholar   +1 more source

Rotary Diffeomorphism onto Manifolds with Affine Connection

, 2017
In this paper we will introduce a newly found knowledge above the existence and the uniqueness of isoperimetric extremals of rotation on two-dimensional (pseudo-) Riemannian manifolds and on surfaces on Euclidean space.
H. Chudá, J. Mikeš, M. Sochor
semanticscholar   +1 more source