(n,m) to (n+1,m) derivatives in Wald

[nickj1]

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.

Homework Statement

(n,m)→(n+1,m) derivatives

Homework Equations

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

The Attempt at a Solution

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

 

[dextercioby]

Can you perhaps scan the relevant extract ? I don't have Wald handy right now.