where P μ μ = 1 c ∫ ∫ T μ μ ν ν − − g d S ν ν is the component of the 4-momentum of matter, R μ μ = 1 4 π π ∫ ∫ ( G μ μ ν ν + Λ Λ g μ μ ν ν ) − − g d S ν ν is the component of the radius of curvature small domain.