Rm,n(α)⁡(r⁢ⅇⅈ⁢θ)=ⅇⅈ⁢(m-n)⁢θ⁢r|m-n|⁢Pmin⁡(m,n)(α,|m-n|)⁡(2⁢r2-1)Pmin⁡(m,n)(α,|m-n|)⁡(1),