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Several different codes for routine calculations in general relativity were published here. I will give one of them (sorry, I don’t remember where I got it from). This code accurately reproduces your results (where no typos): Clear [coord, metric, inversemetric, affine, riemann, ricci, scalar, \ einstein, t, x, y, z] n = 4; coord = {t, x, y,z}; metric = {{...


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