Results 41 to 50 of about 86,860 (314)
Relative torsion classes, relative tilting, and relative silting modules
Communications in Algebra, 2021 Let $Λ$ be an Artin algebra. In 2014, T. Adachi, O. Iyama and I. Reiten proved that the torsion funtorially finite classes in $\mathrm{mod}\,(Λ)$ can be described by the $τ$-tilting theory. The aim of this paper is to introduce the notion of $F$-torsion class in $\mathrm{mod}\,(Λ)$, where $F$ is an additive subfunctor of $\mathrm{Ext}^1_Λ,$ and to ...
Luis Armando Martínez González +1 more
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Why Einstein did not believe that General Relativity geometrizes gravity [PDF]
, 2013 I argue that, contrary to folklore, Einstein never really cared for geometrizing the gravitational or (subsequently) the electromagnetic field; indeed, he thought that the very statement that General Relativity geometrizes gravity "is not saying anything
Lehmkuhl, Dennis
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Strong-Coupled Relativity Without Relativity [PDF]
General Relativity and Gravitation, 2004 GR can be interpreted as a theory of evolving 3-geometries. A recent such formulation, the 3-space approach of Barbour, Foster and Ó Murchadha, also permits the construction of a limited number of other theories of evolving 3-geometries, including conformal gravity and strong gravity.
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RELATIVITY GROUPOID INSTEAD OF RELATIVITY GROUP [PDF]
International Journal of Geometric Methods in Modern Physics, 2007 In 1908, Minkowski [13] used space-like binary velocity-field of a medium, relative to an observer. In 1974, Hestenes introduced, within a Clifford algebra, an axiomatic binary relative velocity as a Minkowski bivector [7, 8]. We propose to consider binary relative velocity as a traceless nilpotent endomorphism in an operator algebra. Any concept of a
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Einstein Geometrization Philosophy and Differential Identities in PAP-Geometry
Advances in Mathematical Physics, 2016 The importance of Einstein’s geometrization philosophy, as an alternative to the least action principle, in constructing general relativity (GR), is illuminated. The role of differential identities in this philosophy is clarified.
M. I. Wanas +3 more
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STABILITY OF STELLAR SYSTEMS ORBITING SGR A*
Odessa Astronomical Publications, 2016 Path equations of different orbiting objects in the presence of very strong gravitational fields are essential to examine the impact of its gravitational effect on the stability of each system.
Magd E. Kahil
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First-Order Logic Foundation of Relativity Theories [PDF]
, 2006 Motivation and perspective for an exciting new research direction interconnecting logic, spacetime theory, relativity--including such revolutionary areas as black hole physics, relativistic computers, new cosmology--are presented in this paper.
X. Madarasz, Judit +8 more
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Unifying the Galilei Relativity and the Special Relativity [PDF]
ISRN Mathematical Physics, 2013 We present two models combining some aspects of the Galilei and the Special relativities that lead to a unification of both relativities. This unification is founded on a reinterpretation of the absolute time of the Galilei relativity that is considered as a quantity in its own and not as mere reinterpretation of the time of the Special relativity in ...
Alexandre Lyra, Marcelo Carvalho
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Advancing physiology education by understanding the multiple dimensions of homeostasis
Frontiers in Physiology, 2023 Homeostasis of the internal environment has been considered the central organizing concept of physiology. However, current definitions of it in textbooks and online teaching sources do not sufficiently reflect how homeostasis serves its central unifying ...
Serena Y. Kuang
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ξRϕ2 coupling, cosmological constant and quantum gravitational corrections to Newton’s potential
Physics Letters BThis letter investigates the contribution of the −gξRϕ2 non-minimal interaction to the long range gravitational potential for massive scalar fields, found from the non-relativistic limit of the 2-2 scattering amplitude with graviton exchanges.
Avijit Sen Majumder, Sourav Bhattacharya
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