∂2⁡𝒦∂⁡r2+2⁢(γ+δ+ϵ)-1r⁢∂⁡𝒦∂⁡r+1r2⁢∂2⁡𝒦∂⁡θ2+(2⁢(δ+ϵ)-1)⁢cot⁡θ-(2⁢γ-1)⁢tan⁡θr2⁢∂⁡𝒦∂⁡θ+1r2⁢sin2⁡θ⁢∂2⁡𝒦∂⁡ϕ2+(2⁢δ-1)⁢cot⁡ϕ-(2⁢ϵ-1)⁢tan⁡ϕr2⁢sin2⁡θ⁢∂⁡𝒦∂⁡ϕ=0.