H2/3(1)⁡(ζ)=ⅇ-2⁢π⁢ⅈ/3⁢H-2/3(1)⁡(ζ)=ⅇπ⁢ⅈ/6⁢(3/z)⁢(Ai′⁡(-z)-ⅈ⁢Bi′⁡(-z)),