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Replying to @derscalisiyorr
The infinitesimal distance ds^2 in an n dimensional space can always be written as differentials in the coordinates x_i and the metric g_{ij}. If you're in R^3 the metric is just identity matrix, returning the familiar form of the line element.pic.twitter.com/60RELFYGOT
11:47 PM - 10 Jul 2019
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