Equation Icon  ∫ [ S[g (t),𝒜 (t),n(t)] = dtn (t)− 1 1-(gac(t)gbd(t) − gab(t) gcd(t))∂g (t)∂g (t) ab abc 4 ab cd 1 ] + ----∂ 𝒜a1a2a3(t)∂ 𝒜a1a2a3(t) . (9.134 ) 2 ⋅ 3!