I see that it is [itex]\sqrt{|-g|}[/itex][itex]d^{4}[/itex]x but I'm not sure why it needs to be multiplied by the square root of the determinant of -g. It must be the Jacobian of [itex]g_{μ\nu}[/itex] or something right? So I guess I'm asking how do you calculate the Jacobian of the metric.(adsbygoogle = window.adsbygoogle || []).push({});

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# I don't understnad how to get the 4-volume element for a Minkowksi space

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