Equation Icon  ∫ ∘ ------ SIF [g + h± ] = 1- d4x − g(x)⟨ˆTab[g;x)⟩[hab(x)] 2 ∫ 1 4 4 ∘ ------∘ ------ ( abcd abcd ) − -- d xd y − g(x) − g (y )[hab(x )] H [g;x, y) + K [g; x,y) {hcd(y)} 8 ∫ ∘ ------∘ ------ + -i d4xd4y − g(x) − g (y )[h (x )]N abcd[g;x, y)[h (y )] + 𝒪 (h3), (30 ) 8 ab cd