Iν⁡(z)=12⁢ⅇ∓ν⁢π⁢ⅈ/2⁢(Hν(1)⁡(z⁢ⅇ±π⁢ⅈ/2)+Hν(2)⁡(z⁢ⅇ±π⁢ⅈ/2)),