cochlea
发表于 2025-3-26 23:57:01
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Foment
发表于 2025-3-27 04:48:43
Differential FormsCartan’s calculus of differential forms is particularly useful in general relativity (but also in other fields of physics). We begin our discussion by repeating some algebraic preliminaries.
granite
发表于 2025-3-27 05:35:11
Affine ConnectionsIn this section we introduce an important additional structure on differentiable manifolds, thus making it possible to define a “covariant derivative” which transforms tensor fields into other tensor fields.
龙卷风
发表于 2025-3-27 09:29:54
Summary of Results and Further Research,eads naturally to the kinematical framework of general relativity and determines, suitable interpreted, the coupling of physical systems to external gravitational fields. This will be discussed in detail in the present chapter.
冥想后
发表于 2025-3-27 16:08:58
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粉笔
发表于 2025-3-27 21:05:51
Research Joint Venture Cartels and Welfare,expects, however, that the horizon will quickly settle down to a stationary state as a result of the emission of gravitational waves. The geometry of the stationary black hole is of course no longer spherically symmetric.
免除责任
发表于 2025-3-27 23:07:51
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Demulcent
发表于 2025-3-28 04:56:58
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华而不实
发表于 2025-3-28 09:59:24
Einstein’s Field Equationsystems. The hard core of the theory, however, consists of ., which relate the metric field to matter. After a discussion of the physical meaning of the curvature tensor, we shall first give a simple physical motivation for the field equations and will then show that they are determined by only a few natural requirements’.
ASTER
发表于 2025-3-28 14:26:58
Black Holesexpects, however, that the horizon will quickly settle down to a stationary state as a result of the emission of gravitational waves. The geometry of the stationary black hole is of course no longer spherically symmetric.