Equation | Equation number | Derivation | Number of components |
(2) | (1) and cyclicity of the Riemann-curvature tensor, | 4 | |
(4) | (1) and (5) | 1 | |
(8) | (5) and (6) | 1 | |
(10) | (9) and (6) | 1 | |
(11) | (9), (6) and (10) | 4 |