Equation Icon  ∇ AS (x) = − -e-U ′uβ′∂ r − ---e--U ′′uβ′′∂ r + -e-U ′ uβ′ β α 2r2 α β β 2radv2 αβ β adv 2r αβ ;β e-( β′ γ′ β′) --e-- β′′ + 2r U αβ′;γ′u u + Uαβ′a ∂βu + 2r Uαβ′′;βu ( ) adv + --e-- U αβ′′;γ′′uβ′′uγ′′ + U αβ′′aβ′′ ∂βv + 1eVαβ′uβ′∂βu 2radv ∫ 2 1 β′′ 1 v μ − 2eVαβ′′u ∂βv − 2e ∇βV αμ(x,z)u d τ, (18.32 ) u