DLMF:8.21.E15 (Q2737)

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Language	Label	Description	Also known as
English	DLMF:8.21.E15	No description defined

Statements

Defining formula

{\displaystyle{\displaystyle\mathrm{Ci}\left(a,z\right)=z^{a}\sum_{k=0}^{% \infty}\frac{(-1)^{k}z^{2k}}{(2k+a)(2k)!},}}

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DLMF:8.21.E15

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{\displaystyle{\displaystyle a\neq 0,-2,-4,\dots}}

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Defining formula

{\displaystyle{\displaystyle!}}

introduction.Sx4.p1.t1.r15.m5aadec

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generalized cosine integral

Defining formula

{\displaystyle{\displaystyle\mathrm{Ci}\left(\NVar{a},\NVar{z}\right)}}

C8.S21.E2.m2addec

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Defining formula

{\displaystyle{\displaystyle z}}

C8.S1.XMD2.m1kdec

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Defining formula

{\displaystyle{\displaystyle a}}

C8.S1.XMD3.m1ldec

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Defining formula

{\displaystyle{\displaystyle k}}

C8.S1.XMD5.m1adec

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Sitelinks

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