k ∂ k Γ k [ φ ] = 1 2 T r ( Γ k ( 2 ) + R k ) − 1 k ∂ k R k {\displaystyle k\partial _{k}\Gamma _{k}[\varphi ]={\frac {1}{2}}{\rm {Tr}}\left(\Gamma _{k}^{(2)}+R_{k}\right)^{-1}k\partial _{k}R_{k}}
![{\displaystyle k\partial _{k}\Gamma _{k}[\varphi ]={\frac {1}{2}}{\rm {Tr}}\left(\Gamma _{k}^{(2)}+R_{k}\right)^{-1}k\partial _{k}R_{k}}](https://wikimedia.org/api/rest_v1/media/math/render/svg/33552e6e3e35593b1509e47a9bd4cbb7f5f36106)
