In picture below, I am not sure why $R(\partial_i,\partial_j)h_{kp}=0$. I think it is because we can consider $h_{kp}$ as a function. Am I right ?
The picture below is from 57th page of this paper.
In picture below, I am not sure why $R(\partial_i,\partial_j)h_{kp}=0$. I think it is because we can consider $h_{kp}$ as a function. Am I right ?
The picture below is from 57th page of this paper.
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