Results 91 to 100 of about 783,588 (168)

ELASTIC STRIPS WITH TIMELIKE DIRECTRIX

, 2020
We study elastic rectifying strips constructed from timelike curves constituting one of the causal characters of a curve in Minkowski 3-space. Even if elastic surfaces correspond to critical points of Willmore functional, we instead find extremals of the
YÜCESAN, Ahmet, Tukel, Gozde Ozkan
core  

Are Petrov type-N and D spacetimes admitting CTCs valid in $$f(R,\mathcal {L}_m,\Phi ,X)$$ f ( R , L m , Φ , X )  gravity?

European Physical Journal C: Particles and Fields
We ask whether two classical time-machine geometries, the Ori (2005) compact-vacuum-core metric and the Ahmed (2018) four-dimensional generalisation of Misner space, remain admissible exact solutions when the gravitational sector is enlarged to the ...
Faizuddin Ahmed, Ahmad Al-Badawi, İzzet Sakallı   +2 more
doaj   +1 more source

NEW CHARACTERIZATIONS OF SPACELIKE CURVES ON TIMELIKE SURFACES THROUGH THE LINK OF SPECIFIC FRAMES

, 2018
In this work, considering a regular spacelike curve on a smooth timelike surface in Minkowski 3-space, we investigate relations between the mentioned curve's Darboux and Bishop frames on the timelike surface.
Unluturk, Y., Yilmaz, S.
core   +1 more source

Differential representation of the Lorentzian spherical timelike curves by using bishop frame

, 2019
In this study, we will give the differential representation of the Lorentzian spherical timelike curves according to Bishop frame and we obtain a third-order linear differential equation which represents the position vector of a timelike curve lying on a
Kocayigit H., Balki Okullu P., KOCAYİĞİT, HÜSEYİN, BALKI OKULLU, PINAR   +3 more
core   +1 more source

Hyperbolic angles in Lorentzian length spaces and timelike curvature bounds. [PDF]

J Lond Math Soc, 2023
Beran T, Sämann C.
europepmc   +1 more source

The Singularity Theorems of General Relativity and Their Low Regularity Extensions. [PDF]

Jahresber Dtsch Math Ver, 2023
Steinbauer R.
europepmc   +1 more source

Null Distance and Convergence of Lorentzian Length Spaces. [PDF]

Ann Henri Poincare, 2022
Kunzinger M, Steinbauer R.
europepmc   +1 more source

INTEGRAL CHARACTERIZATIONS FOR TIMELIKE AND SPACELIKE CURVES ON THE LORENTZIAN SPHERE S13

V. Dannon showed that spherical curves in E-4 can be given by Frenet-like equations, and he then gave an integral characterization for spherical curves in E-4.
Ugurlu, HH, Ozdemir, A, Kazaz, M
core  

Differentiability and other properties of the cosmological volume function. [PDF]

Lett Math Phys
García-Heveling L.
europepmc   +1 more source

A note on the Gannon-Lee theorem. [PDF]

Lett Math Phys, 2021
Schinnerl B, Steinbauer R.
europepmc   +1 more source