制度
发表于 2025-3-26 23:50:58
The Varieties of Unity: Sounding Unified Theories 1920–1930 so close at hand for many physicists and mathematicians as in the third decade of the twentieth century. And if there were those who saw a great promise in this, there were equally those who opposed it.. Even among its partisans, just what such an ‘ultimate’ might resemble was not clear, its scope
察觉
发表于 2025-3-27 02:52:56
Indiscernibles, General Covariance, and Other Symmetries: The Case for Non-Reductive Relationalismhe noted that if the equations of motion are covariant under arbitrary coordinate transformations, then particle coordinates at a given time can be varied arbitrarily — they are underdetermined — even if their values at all earlier times are held fixed. It is the same for the values of fields. The a
cornucopia
发表于 2025-3-27 06:42:08
The unique nature of cosmologycs, and is now part of mainstream science, with a well-established standard model confirmed by various strands of evidence (.; .; .). Nevertheless because of its nature, it is different from any other branch of the natural sciences. The major issue causing the differences is the uniqueness of its ob
险代理人
发表于 2025-3-27 10:32:23
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Alcove
发表于 2025-3-27 17:38:28
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感激小女
发表于 2025-3-27 18:29:37
Gravitational Lensing from a Space-Time Perspectiveor a background metric. The intent is to construct a conceptual framework so that lensing theory fits covariantly into general relativity and then to see how the usual perturbation approach is related to it.
MAZE
发表于 2025-3-27 23:13:38
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平庸的人或物
发表于 2025-3-28 04:21:20
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极大的痛苦
发表于 2025-3-28 08:13:52
Quasi-Local Energyection of the future and past cones from nearby time-like separated points. The calculation uses the canonical formalism on a null cone and defines the quasi-local energy as a two-surface integral over the convergence of the past cone minus a similar integral over a surface in Minkowski space. This
旧石器
发表于 2025-3-28 13:50:50
Book 2003d quantum physics. This title is unique in that:.. .it comprises contributions by leading physicists, philosophers and historians of science;. .it covers the recent debates on the emergence of relativity and quantum theory;. .it includes chapters with an introductory character, comprehensible to stu