Equation Icon  -δ--^Γ [f¯,σ,¯σ;¯g] = Jαβ [f¯,σ,¯σ;¯g], δ ¯fαβ k ∗ --δ-^ ¯ α ¯ (4.7 ) δ ¯σαΓ k[f ,σ,¯σ;¯g] = j∗[f,σ,¯σ; ¯g], δ δ-σα^Γ k[f¯,σ,¯σ;¯g] = ¯j∗,α[¯f,σ,σ¯; ¯g].