Recent content by nickj1

It's been half a decade since anyone's posted on this thread, so I don't know if it's appropriate for me to. But this seems to be the go-to thread for Lie vs. covariant for everyone at pf and even across the Web. So, since I'm struggling with trying to understand these issues myself, I hope it's...

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...