Electromagnetic tensor | Willem Schouten | Einstein tensor | Schouten Island | Codazzi tensor |
The Weyl–Schouten theorem in mathematics says that a Riemannian manifold of dimension n with n ≥ 3 is conformally flat if and only if the Schouten tensor is a Codazzi tensor for n = 3, or the Weyl tensor vanishes for n > 3.