Equation Icon  αβ γ 1 γ αβ 1( αβ α β γδ )|| Vˇ γ′δ′;γσ + 2(σ γ − 2)ˇV γ′δ′ = 2-□U γ′δ′ + 2R γ δ U γ′δ′ |σ=0 (16.10 )