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I have seen the general form for the metric tensor in general relativity, but I don't understand how that math would create a Minkowski metric with the diagonal matrix {-1 +1 +1 +1}. I assume that using the kronecker delta to create the metric would produce a matrix that has all positive 1s in the diagonal. Are these numbers arbitrarily picked for certain "special" spaces?

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# B Metric Tensor and The Minkowski metric

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