2𝒦r2+2(γ+δ+ϵ)1r𝒦r+1r22𝒦θ2+(2(δ+ϵ)1)cotθ(2γ1)tanθr2𝒦θ+1r2sin2θ2𝒦ϕ2+(2δ1)cotϕ(2ϵ1)tanϕr2sin2θ𝒦ϕ=0.