> Why is this conserved? Because ∇ᵤ(Tᵘᵥξᵥ) = (∇ᵤ Tᵘᵥ)ξᵥ + Tᵘᵥ(∇ᵤ ξᵥ). Interesting. > This is an example of a topic that unstructured self study would likely s

> Why is this conserved? Because ∇ᵤ(Tᵘᵥξᵥ) = (∇ᵤ Tᵘᵥ)ξᵥ + Tᵘᵥ(∇ᵤ ξᵥ). Interesting. > This is an example of a topic that unstructured self study would likely skip. I'm not studying physics – could you take a look at some unstructured reflexions I wrote a couple weeks ago? https://news.ycombinator.com/item?id=48699125 https://news.ycombinator.com/item?id=48699125