DLMF:8.19.E3 (Q2689): Difference between revisions

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Property / constraint
 

| ph z | < 1 2 π phase 𝑧 1 2 𝜋 {\displaystyle{\displaystyle|\operatorname{ph}z|<\tfrac{1}{2}\pi}}

|\phase@@{z}|<\tfrac{1}{2}\pi
Property / constraint: | ph z | < 1 2 π phase 𝑧 1 2 𝜋 {\displaystyle{\displaystyle|\operatorname{ph}z|<\tfrac{1}{2}\pi}} / rank
 
Normal rank

Revision as of 16:12, 30 December 2019

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DLMF:8.19.E3
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    Statements

    E p ( z ) = 1 e - z t t p d t , exponential-integral-En 𝑝 𝑧 superscript subscript 1 superscript 𝑒 𝑧 𝑡 superscript 𝑡 𝑝 𝑡 {\displaystyle{\displaystyle E_{p}\left(z\right)=\int_{1}^{\infty}\frac{e^{-zt% }}{t^{p}}\mathrm{d}t,}}
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    | ph z | < 1 2 π phase 𝑧 1 2 𝜋 {\displaystyle{\displaystyle|\operatorname{ph}z|<\tfrac{1}{2}\pi}}
    0 references