Results 11 to 20 of about 580,603 (121)
Einstein y la filosofía del siglo XX
Arbor: Ciencia, Pensamiento y Cultura, 2007 Se analizan las influencias filosóficas que ayudaron a Albert Einstein en la construcción de la teoría de la relatividad especial, y cómo sus opiniones filosóficas cambiaron con el tiempo para adecuarlas al contenido de su física, un rasgo que es ...
José Manuel Sánchez Ron
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Similarity of Solutions of Non Conformally Perfect Fluid Models of Embedding Class One [PDF]
Engineering and Technology Journal, 2013 The Study of similarity Transformation Method has played a remarkable role of dealing with many immediate theoretical and practical applications in our life problems, such as physical and engineering problems [6].This method find the solution for the ...
Dhuha Majeed Salih
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Rigidity results for closed vacuum static spaces
AIMS Mathematics, 2023 In this paper we studied rigidity results for closed vacuum static spaces. By using the maximum principle, we achieved rigidity theorems under some pointwise inequalities and showed that the squared norm of the Ricci curvature tensor was discrete.
Guangyue Huang, Botao Wang
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Journal of High Energy Physics, 2011 typos corrected, 16 pages, 1 figure, to appear in ...
Thomas Van Riet +2 more
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Examples of Einstein manifolds in odd dimensions [PDF]
, 2011 We construct Einstein metrics of non-positive scalar curvature on certain solid torus bundles over a Fano Kahler-Einstein manifold. We show, among other things, that the negative Einstein metrics are conformally compact, and the Ricci-flat metrics have ...
Chen, Dezhong
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On Einstein clusters as galactic dark matter halos [PDF]
, 2007 We consider global and gravitational lensing properties of the recently suggested Einstein clusters of WIMPs as galactic dark matter halos. Being tangential pressure dominated, Einstein clusters are strongly anisotropic systems which can describe any ...
Boehmer, C. G., Harko, T.
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Boundary conditions for hyperbolic formulations of the Einstein equations [PDF]
, 2003 In regards to the initial-boundary value problem of the Einstein equations, we argue that the projection of the Einstein equations along the normal to the boundary yields necessary and appropriate boundary conditions for a wide class of equivalent ...
Abrahams A M +18 more
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Beta-almost Ricci solitons on Sasakian 3-manifolds
Cubo, 2019 In this paper we characterize the Sasakian 3-manifolds admitting β-almost Ricci solitons whose potential vector field is a contact vector field. Among others we prove that a β-almost Ricci soliton whose potential vector field is a contact vector field on
Pradip Majhi, Debabrata Kar
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Moving Observers in an Isotropic Universe [PDF]
, 2006 We show how the anisotropy resulting from the motion of an observer in an isotropic universe may be determined by measurements. This provides a means to identify inertial frames, yielding a simple resolution to the twins paradox of relativity theory.
A. Einstein +3 more
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Autodual Einstein Versus Kähler–Einstein [PDF]
GAFA Geometric And Functional Analysis, 2005 Typos ...
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