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jbergman's latest activity
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jbergman
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The Causal Bootstrap Paradox in General Relativity
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This isn’t a paradox, it is simply a mistake. The EFE does not establish a causal relationship. A thought that it does is a mistake.
Jul 12, 2025
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jbergman
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The Causal Bootstrap Paradox in General Relativity
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I think you have a misunderstanding of what an equation is. The equation doesn't say that ##T## determines or causes ##G##. It says that...
Jul 12, 2025
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Question about Weinberg's GR book
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The reason that ##^4_{R_{i j}}## is not included in the list (9.1.26) through (9.1.29) is because this list is meant to include only the...
Jul 12, 2025
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Homemorphism in quotient topology
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I don't think this is an easy question in general. Yhere is no magic answer. Every smooth manifold can be described as a quotient of...
Jul 2, 2025
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jbergman
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Question on Dirac's derivatives of the 4-velocity w.r.t. coordinates
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Any book on differential geometry. For example John Lee's "Riemannian Manifolds: An Introduction to Curvature." The chapter on...
Jun 23, 2025
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