Equation Icon  1 Γ κ =--∘--------------𝜀 μ0...μ3 (γμ0...μ3 iτ2 + 6Fμ0μ1γμ3μ4 τ1 + 3Fμ0μ1Fμ2μ3 iτ2) . (318 ) 4! − det(𝒢 + ℱ)