Results 41 to 50 of about 29,853 (133)

On generalized null Mannheim curves in Minkowski space-time

open access: yesPublications de l'Institut Mathematique, 2016
We define generalized null Mannheim curves in Minkowski space-time and characterize them and their generalized Mannheim mate curves in terms of curvature functions, and obtain relations between their frames. We provide examples of such curves.
Milica Grbovic   +2 more
openaire   +4 more sources

On generalized partially null Mannheim curves in Minkowski space-time

open access: yesNovi Sad Journal of Mathematics, 2016
In this paper we define generalized partially null and pseudo null Mannheim curves in Minkowski space-time $E^{4}_{1}$. We prove that there are no non-geodesic generalized partially null Mannheim curves in $E^{4}_{1}$, by considering the cases when the corresponding mate curve is a spacelike, a timelike , a null Cartan, a pratially null or a pseudo ...
Grbović, Milica, Nesovic, Emilija
openaire   +3 more sources

Statistical Strong Lensing as a Test of Conformal Gravity

open access: yesUniverse
As an alternative gravitational theory to General Relativity (GR), Conformal Gravity (CG) can be verified through astronomical observations. Currently, Mannheim and Kazanas have provided vacuum solutions for cosmological and local gravitational systems ...
Li-Xue Yue, Da-Ming Chen
doaj   +1 more source

On construction of Mannheim curves with Myller configuration

open access: yesTurkish Journal of Mathematics
In this study, our aim is to strengthen the results of the existing literature on the concept of Mannheim curves by using the natural and idiosyncratic structure of Myller configuration. For this purpose, we examine Mannheim curves with Frenet-type frame in Myller configuration for Euclidean 3-space E3 and Euclidean 4-space E4.
ZEHRA İŞBİLİR   +2 more
openaire   +1 more source

Mannheim Curves in 3-Dimensional Euclidean Space

open access: yesInternational Scientific and Vocational Studies Journal, 2020
In this paper, we consider the Mannheim curve and the slant helix together. We called this curve as a Mannheim slant helix shortly. First we calculate the (first) curvature 𝜿(𝒔), and the curvature of the tangent indicatrix of the Mannheim curve, in terms of the arc-lenght parameter of the curve.
openaire   +3 more sources

ON MANNHEIM PARTNER CURVES IN DUAL LORENTZIAN SPACE

open access: yes, 2011
In this paper we define non-null Mannheim partner curves in three dimensional dual Lorentzian space D(1)(3), and obtain necessary and sufficient conditions for the existence of non-null Mannheim partner curves in dual Lorentzian space D(1)(3).
ÖZKALDI, Sıddıka   +2 more
openaire   +3 more sources

MANNHEIM CURVES IN AN N-DIMENSIONAL LORENTZ MANIFOLD [PDF]

open access: yesInternational Journal of Pure and Apllied Mathematics, 2014
In this paper, we give the definition of non-null Mannheim curve and null Mannheim curve in an n-dimensional Lorentz manifold. Furthermore, we give the condition for the non-null Mannheim partner curves and the null Mannhein partner curves.
openaire   +1 more source

On The Second Order Mannheim Partner Curve In E3

open access: yes, 2017
Mannheim curve was firstly defined by A. Mannheim in 1878.
Seyda Kılıcoglu, Suleyman Senyurt
openaire   +2 more sources

A Note an Admissible Mannheim Curves in Galilean Space

open access: yes, 2010
The aim of this paper is to study the Mannheim partner curves in three dimensional Galilean space . Some well known theorems are obtained related to Mannheim curves.
Ersoy, S., Akyiğit, M., Tosun, M.
openaire   +2 more sources

Machine Learning-Based Model to Predict Survival in Resectable Intrahepatic Cholangiocarcinoma

open access: yesCancer Management and Research
Guoteng Qiu,1,* Shizheng Mi,2,3,* Jiali Chen,4,* Haichuan Wang,2 Le Luo11Department of Hepatobiliary and Pancreatic Surgery, Sichuan Provincial People’s Hospital, School of Medicine, University of Electronic Science and Technology
Qiu G, Mi S, Chen J, Wang H, Luo L
doaj  

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