Equation Icon  1 ∫ ∘ ------ α ¯μn−4 ∫ ∘ ------ Sg[gμν] = -------n−2- dnx − g(x )R (x) +--------- dnx − g(x) (16πG ){ 2 [ 4(n − 4) ] } ( )2 × 3R μναβ(x)R μναβ (x ) − 1 − 360 ξ(n) − 1- R2(x ) . (192 ) 6