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211 | Solo: Secrets of Einstein's Equation
Sean Carroll's Mindscape: Science, Society, Philosophy, Culture, Arts, and Ideas
The Riemann Tensor, R-Mu-Nu, Is a Four-Index Riemannian Tensor.
Einstein came up with the idea that gravity is the curvature of spacetime. We know that Einstein first proposed it was R-mu-nu, before he eventually said one-half R-g- mu-nu. But while he was struggling with that last step, his friend Gertigan invited him to a lecture by mathematician David Hilbert. He learned just enough mathematics for the sake of mathematics and got into general relativity.
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