Results 21 to 30 of about 61,569 (245)

Strong lensing as a test for Conformal Weyl Gravity [PDF]

open access: yes, 2014
Conformal Weyl Gravity (CWG) predicts galactic rotation curves without invoking dark matter. This makes CWG an interesting candidate theory as an alternative to GR.
Adami, Kristian Zarb, Cutajar, Deandra
core   +2 more sources

Newtonian Limit of Conformal Gravity [PDF]

open access: yes, 1999
We study the weak-field limit of the static spherically symmetric solution of the locally conformally invariant theory advocated in the recent past by Mannheim and Kazanas as an alternative to Einstein's General Relativity.
C. M. Will   +22 more
core   +2 more sources

On Mannheim curves in Riemann-Otsuki space

open access: yesBoletim da Sociedade Paranaense de Matemática, 2011
In this paper, we studied the Mannheim partner curves and their new characterizations are also obtained in Riemann-Otsuki space.
Zühal Küçükarslan   +1 more
openaire   +4 more sources

Microlensing, Newton-Einstein Gravity and Conformal Gravity [PDF]

open access: yes, 1994
We discuss some implications of the current round of galactic dark matter searches for galactic rotation curve systematics and dynamics, and show that these new data do not invalidate the conformal gravity program of Mannheim and Kazanas which has been ...
Mannheim, Philip D.
core   +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   +3 more sources

Mannheim B-curve couples in Minkowski 3-space

open access: yesTamkang Journal of Mathematics, 2020
In this paper, we define null Cartan and pseudo null Mannheim curves in Minkowski 3-space according to their Bishop frames. We obtain the necessary and the sufficient conditions for pseudo null curves to be Mannheim B-curves in terms of their Bishop curvatures.
Ilarslan, Kazim   +3 more
openaire   +2 more sources

Surgical treatment of patients with abdominal sepsis taking into account the prediction of the implementation of re-operations

open access: yesКлінічна хірургія, 2020
Objective. The investigation objective was improvement of the surgical treatment results in patients, suffering аbdominal sepsis, using individualized tactics of treatment, taking into account a possibility for the postoperative complications occurrence ...
I. A. Kryvoruchko   +3 more
doaj   +1 more source

Bertrand and Mannheim partner -curves on parallel surfaces

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 Mannheim partner -curve. Then we obtain relationships between Bertrand and Mannheim partner -curves
Sezai Kızıltuğ   +2 more
openaire   +5 more sources

Massive conformal gravity [PDF]

open access: yes, 2014
In this article we construct a massive theory of gravity that is invariant under conformal transformations. The massive action of the theory depend on the metric tensor and a scalar field, which are considered as the only field variables.
Faria, F. F.
core   +3 more sources

Smarandache Curves of Mannheim Curve Couple According to Frenet Frame

open access: yesMathematical Sciences and Applications E-Notes, 2017
p>In this paper, when the unit Darboux vector of the partner curve of Mannheimnbsp;curve are taken as the position vectors, the curvature and the torsion of Smarandache curvenbsp;are calculated. These values are expressed depending upon the Mannheim curve. Besides,nbsp;we illustrate example of our main results./p>
ŞENYURT, Süleyman   +1 more
openaire   +3 more sources

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