I'm reading some texts on general relativity and I am wondering how one can mathematically proof that the covariant derivative (wrt mu) of the four-vector j^mu equals zero.(adsbygoogle = window.adsbygoogle || []).push({});

I know that the covarient derivative (wrt nu) of F^mu^nu equals the four-current times some costant and that you should use this to obtain the final result, but I can't find in any text how you should do this exactly.

Anyone who knows the proof?

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# Charge conservation in curved spacetime

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