DLMF:12.5.E2 (Q4116)

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DLMF:12.5.E2
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    Statements

    Defining formula
    U ⁡ ( a , z ) = z ⁢ e - 1 4 ⁢ z 2 Γ ⁡ ( 1 4 + 1 2 ⁢ a ) ⁢ ∫ 0 ∞ t 1 2 ⁢ a - 3 4 ⁢ e - t ⁢ ( z 2 + 2 ⁢ t ) - 1 2 ⁢ a - 3 4 ⁢ d t , parabolic-U 𝑎 𝑧 𝑧 superscript 𝑒 1 4 superscript 𝑧 2 Euler-Gamma 1 4 1 2 𝑎 superscript subscript 0 superscript 𝑡 1 2 𝑎 3 4 superscript 𝑒 𝑡 superscript superscript 𝑧 2 2 𝑡 1 2 𝑎 3 4 𝑡 {\displaystyle{\displaystyle U\left(a,z\right)=\frac{ze^{-\frac{1}{4}z^{2}}}{% \Gamma\left(\frac{1}{4}+\frac{1}{2}a\right)}\*\int_{0}^{\infty}t^{\frac{1}{2}a% -\frac{3}{4}}e^{-t}\left(z^{2}+2t\right)^{-\frac{1}{2}a-\frac{3}{4}}\mathrm{d}% t,}}
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    DLMF id
    DLMF:12.5.E2
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    constraint
    | ph ⁡ z | < 1 2 ⁢ π phase 𝑧 1 2 𝜋 {\displaystyle{\displaystyle|\operatorname{ph}z|<\tfrac{1}{2}\pi}}
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    ℜ ⁡ a > - 1 2 𝑎 1 2 {\displaystyle{\displaystyle\Re a>-\tfrac{1}{2}}}
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    Symbols used
    gamma function
    Defining formula
    Γ ⁡ ( z ) Euler-Gamma 𝑧 {\displaystyle{\displaystyle\Gamma\left(\NVar{z}\right)}}
    xml-id
    C5.S2.E1.m2aadec
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    the ratio of the circumference of a circle to its diameter
    Defining formula
    π {\displaystyle{\displaystyle\pi}}
    xml-id
    C3.S12.E1.m2adec
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