1. The problem statement, all variables and given/known data Essentially, my adviser just told me to get the equation, then expand it so that it doesn't have any tensors. That's it. Just get rid of the tensors. He said that this would be normally found in some textbook...? I've searched a lot of books, but I never saw anything that didn't have the equations in tensor form. 2. Relevant equations I got Gμv = 8πTμv. Reading further, I also got the following: Gμv = Rμv - (1/2)gμvR R = gαβRαβ And I also found the Ricci tensor in terms of the Christoffel symbols but that's too long to type. 3. The attempt at a solution What I tried doing is just plug in values of the greek indices and treat each one as a separate equation. However, when I use gαβ = diag(-1, 1, 1, 1), the left hand side always becomes zero. Is there any other value of the metric tensor that I can use?