First of all, I'd like to say hi to all the peole here on the forum!
Now to my question:
When reading some general relativity articles, I came upon this strange notation:
T^{a}_{b} = C(dt)^{a}(∂_{t})_{b} + D(∂_{t})^{a}(dt)_{b}. Can someone please explain to me what this means? Clearly...