Results 1 to 10 of about 9,028 (148)

Bertrand and Mannheim partner -curves on parallel surfaces [PDF]

open access: yesBoletim da Sociedade Paranaense de Matemática, 2017
In this paper we study Bertrand and Mannheim partner -curves on parallel surface. Using the definition of parallel surfaces, first we find images of two curves lying on two different surfaces and satisfying the conditions to be Bertrand partner -curve or
Mehmet Onder   +2 more
core   +7 more sources

Mannheim curves and their partner curves in Minkowski 3-space E13

open access: yesDemonstratio Mathematica, 2022
The modified orthogonal frame is an important tool to study analytic space curves whose curvatures have discrete zero points. In this article, by using the modified orthogonal frame, Mannheim curves and their partner curves are investigated in Minkowski ...
Elsharkawy Ayman, Elshenhab Ahmed M.
doaj   +2 more sources

Some characterizations of Mannheim partner curves in the Minkowski 3-space E13; pp. 210–220 [PDF]

open access: yesProceedings of the Estonian Academy of Sciences, 2011
In this paper, we give some characterizations of Mannheim partner curves in the Minkowski 3-space E13. Firstly, we classify these curves in E13. Next, we give some relationships characterizing these curves and we show that the Mannheim theorem is not ...
Tanju Kahraman   +3 more
doaj   +2 more sources

On Mannheim partner curves in three dimensional Lie groups [PDF]

open access: yesMiskolc Mathematical Notes, 2014
In this paper, we define Mannheim partner curves in a three dimensional Lie group G with a bi-invariant metric. And then the main result in this paper is given as (Theorem 3.3): A curve with the Frenet apparatus {T,N,B, , } in G is a Mannheim partner curve if and only if (1+H2)=1, where is constant and H is the harmonic curvature function ...
Okuyucu, O. Zeki   +3 more
openaire   +5 more sources

On null and pseudo null Mannheim curves in Minkowski 3-space [PDF]

open access: yesJournal of Geometry, 2013
In this paper, we prove that there are no null Mannheim curves in Minkowski 3-space. We also prove that the only pseudo null Mannheim curves in Minkowski 3-space are pseudo null straight lines and pseudo null circles whose Mannheim partner curves are ...
Grbović, Milica   +2 more
core   +3 more sources

Smarandache curves according to Sabban frame for Darboux vector of Mannheim partner curve [PDF]

open access: yesAIP Conference Proceedings, 2017
In this paper, we investigated special Smarandache curves belonging to Sabban frame drawn on the surface of the sphere by Darboux vector of Mannheim partner curve. We created Sabban frame belonging to this curve. It was explained Smarandache curves position vector is consisted by Sabban vectors belonging to this curve.
Senyurt, Suleyman   +2 more
openaire   +3 more sources

Mannheim partner curves in Cartan-Vranceanu 3-space

open access: yesFilomat, 2016
In this paper, the Mannheim mate curves of the proper biharmonic curves in Cartan-Vranceanu 3-dimensional spaces (M,ds2l,m), with l2 ? 4m and m ? 0 are studied. We give the definition of the Mannheim mate of a proper biharmonic curve and give the explicit parametric equations of that Mannheim mate curve in Cartan-Vranceanu 3-dimensional ...
Ayse Ceylan, Abdullah Ergin
openaire   +4 more sources

Leveraging private capital for climate mitigation: evidence from the clean development mechanism [PDF]

open access: yes, 2013
To mitigate climate change, states must make significant investments into energy and other sectors. To solve this problem, scholars emphasize the importance of leveraging private capital.
Bayer, Patrick   +2 more
core   +2 more sources

Mannheim Curves in Nonflat 3-Dimensional Space Forms

open access: yesAdvances in Mathematical Physics, 2015
We consider the Mannheim curves in nonflat 3-dimensional space forms (Riemannian or Lorentzian) and we give the concept of Mannheim curves. In addition, we investigate the properties of nonnull Mannheim curves and their partner curves.
Wenjing Zhao, Donghe Pei, Xinyu Cao
doaj   +1 more source

Mannheim partner curves in 3-dimensional Heisenberg group

open access: yesInternational Journal of the Physical Sciences, 2011
In this study, we give some basic theorems for Mannheim partner curves in three dimensional Heisenberg group. We also found the relations between the curvatures and torsions of these associated curves.   Key words: Heisenberg group, Mannheim curve.
Tul S., Sarioğlugil A.
openaire   +1 more source

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