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In this paper, the definition of generalized spacelike Mannheim curve in Minkowski space-time $E_1^4$ is given. The necessary and sufficient conditions for the generalized spacelike Mannheim curve are obtained. Also, some characterizations…

Differential Geometry · Mathematics 2014-03-27 Soley Ersoy , Murat Tosun , Hiroo Matsuda

In this paper, we establish equiform differential geometry of space and timelike curves in 4-dimensional Minkowski space. We obtain some conditions for these curves. Also, general helices with respect to their equiform curvatures are…

Differential Geometry · Mathematics 2015-01-13 H. S. Abdel-Aziz , M. Khalifa Saad , A. A. Abdel-Salam

In this paper, we define a rectifying spacelike curve in the Minkowski space-time $E_1^4$ as a curve whose position vector always lies in orthogonal complement $N^{\bot}$ of its principal normal vector field $N$. In particular, we study the…

Differential Geometry · Mathematics 2009-04-07 Ahmad T. Ali , Mehmet Onder

In this paper, we give the generalization of the criterion for a 3-space curve to be closed given by [3] to an n-space curve in Minkowski space-time E_v^n. Furthermore, we apply this criterion for a curve lying on an oriented surface in the…

Differential Geometry · Mathematics 2011-05-17 Zehra Ari , Mehmet Önder

In [5], Matsuda and Yorozo obtained that Mannheim curves in 4-dimensional Euclidean space. In this study, we define quaternionic Mannheim curves and we give some characterizations of them in Euclidean 3-space and 4-space.

Differential Geometry · Mathematics 2013-11-05 O. Zeki Okuyucu

In this paper, we give some characterizations for spacelike helices in Minkowski space-time. We find the differential equations characterizing the spacelike helices and also give the integral characterizations for these curves in Minkowski…

Differential Geometry · Mathematics 2010-06-04 Mehmet Önder , Hüseyin Kocyiğit , Mustafa Kazaz

We provide a unified description of Heinz-type mean curvature estimates under an assumption on the gradient bound for space-like graphs and time-like graphs in the Lorentz-Minkowski space. As a corollary, we give a unified vanishing theorem…

Differential Geometry · Mathematics 2023-08-31 Atsufumi Honda , Yu Kawakami , Miyuki Koiso , Syunsuke Tori

We consider a unit speed timelike curve $\alpha$ in Minkowski 4-space $E_1^4$ and denote the Frenet frame of $\alpha$ by $\{T,N,B_1,B_2\}$. We say that $\alpha$ is a generalized helix if one of the unit vector fields of the Frenet frame has…

Differential Geometry · Mathematics 2008-10-09 Ahmad T. Ali , Rafael López

In this paper, we give the definition, different types and characterizations of Mannheim partner D-curves in Minkowski 3-space. We find the relations between the geodesic curvatures, the normal curvatures and the geodesic torsions of these…

Differential Geometry · Mathematics 2010-05-07 Mustafa Kazaz , H. Hüseyin Uğurlu , Mehmet Önder , Tanju Kahraman

In this study, we consider curves of generalized AW(k)-type of Euclidean n-space. We give curvature conditions of these kind of curves.

Differential Geometry · Mathematics 2021-03-02 Kadri Arslan , Saban Guvenc

In this paper, we get the time evolution equations of the curvature and torsion of the evolving spacelike curves in the Minkowski space. Also, we give inextensible evolutions of timelike ruled surfaces that are produced by the timelike…

Differential Geometry · Mathematics 2021-02-23 Dae Won Yoon , Zuhal Kucukarslan Yuzbasi , Ebru Cavlak Aslan

In this paper, we study the timelike tubular Weingarten surfaces in 3-dimensional Minkowski space $IR_1^3 $.We have obtained some conditions for being $({K_{II},H})$, $({K_{II},K})$, timelike tubular Weingarten surfaces where are the second…

Differential Geometry · Mathematics 2011-06-14 Ayse Zeynep Azak , Melek Masal , Serpil Halıcı

Special curves and their characterizations are one of the main area of mathematicians and physicians. As a special curve we will mainly focus on Mannheim curve which has the following relation: k1={\beta}(k1^2+k2^) where k1 and k2 are…

Differential Geometry · Mathematics 2011-11-03 Mehmet Bektaş , Mahmut Ergüt , Alper Osman Öğrenmiş

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.

Differential Geometry · Mathematics 2010-03-17 S. Ersoy , M. Akyiğit , M. Tosun

In this study, we give weighted mean and weighted Gaussian curvatures of two types of timelike general rotational surfaces with non-null plane meridian curves in four-dimensional Minkowski space E^4_1 with density…

General Mathematics · Mathematics 2023-05-30 Ahmet Kazan , Mustafa Altın , Dae Won Yoon

In this study, we investigate the existence theorems for timelike ruled surfaces in Minkowski 3-space. We obtain a general system and give the existence theorems for a timelike ruled surface according to Gaussian curvature, distribution…

Differential Geometry · Mathematics 2019-10-01 Mehmet Önder

In this paper, position vectors of a time-like curve with respect to standard frame of Minkowski space E$^3_1$ are studied in terms of Frenet equations. First, we prove that position vector of every time-like space curve in Minkowski space…

Differential Geometry · Mathematics 2009-06-23 Ahmad T. Ali , Melih Turgut

In this paper, we give the characterizations of Mannheim Partner Curves in Minkowski 3-space . Firstly, we classify these curves in . Next, we give some relationships characterizing these curves and we show that Mannheim theorem is not…

Differential Geometry · Mathematics 2011-08-24 Tanju Kahraman , Mehmet Önder , Mustafa Kazaz , H. Hüseyin Uğurlu

In this paper, using the classifications of timelike and spacelike ruled surfaces, we study the Mannheim offsets of timelike ruled surfaces in Minkowski 3-space. Firstly, we define the Mannheim offsets of a timelike ruled surface by…

Differential Geometry · Mathematics 2013-05-28 Mehmet Onder , H. Hüseyin Uğurlu

In this work we provide necessary and sufficient conditions for the existence of a minimal timelike strip in Lorentz-Minkowski space $\mathbb{R}^4_1$ containing a given lightlike curve and prescribed normal bundle. We also discuss…

Differential Geometry · Mathematics 2019-11-19 Antonio de Padua Franco Filho , Alexandre Lymberopoulos
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