Ai⁡(z)=12⁢π-1/2⁢z-1/4⁢W0,1/3⁡(2⁢ζ)=3-1/6⁢π-1/2⁢ζ2/3⁢ⅇ-ζ⁢U⁡(56,53,2⁢ζ),