Could someone please explain the partial and covariant derivatives with upstairs index that appears all of a sudden in Wald in section 4.2 with no explanation? I haven't seen it anywhere else.(adsbygoogle = window.adsbygoogle || []).push({});

1. The problem statement, all variables and given/known data

(n,m)→(n+1,m) derivatives

2. Relevant equations

section 4.2--when the stress tensor is introduced, with downstairs indexes

3. The attempt at a solution

it was mentioned earlier by Wald; just didn't see it

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# Homework Help: (n,m) to (n+1,m) derivatives in Wald

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