  \sum_{\sigma_0\sigma_0}     - \Gamma^{\text{s},\Lambda}_{\nu\rho\gamma\delta}     \Gamma^{\text{s},\Lambda}_{\alpha\beta\mu\sigma}     \delta^{00}_{00}     \delta^{00}_{00}   & = &     - \Gamma^{\text{s},\Lambda}_{\nu\rho\gamma\delta}     \Gamma^{\text{s},\Lambda}_{\alpha\beta\mu\sigma}     \delta^{00}_{00}