Formula:DLMF:25.12:E15

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G s ( x ) = 1 Γ ( s + 1 ) 0 t s e t - x - 1 d t subscript 𝐺 𝑠 𝑥 1 Euler-Gamma 𝑠 1 superscript subscript 0 superscript 𝑡 𝑠 𝑡 𝑥 1 𝑡 {\displaystyle{\displaystyle{\displaystyle G_{s}(x)=\frac{1}{\Gamma\left(s+1% \right)}\int_{0}^{\infty}\frac{t^{s}}{{\mathrm{e}^{t-x}}-1}\mathrm{d}t}}}

Constraint(s)

s > - 1 𝑠 1 {\displaystyle{\displaystyle{\displaystyle s>-1}}} , x < 0 𝑥 0 {\displaystyle{\displaystyle{\displaystyle x<0}}} , or s > 0 𝑠 0 {\displaystyle{\displaystyle{\displaystyle s>0}}} , x 0 𝑥 0 {\displaystyle{\displaystyle{\displaystyle x\leq 0}}}


Name

Bose-Einstein integral


Proof

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Symbols List

Γ Γ {\displaystyle{\displaystyle{\displaystyle\Gamma}}}  : Euler's gamma function : http://dlmf.nist.gov/5.2#E1
{\displaystyle{\displaystyle{\displaystyle\int}}}  : integral : http://dlmf.nist.gov/1.4#iv
e e {\displaystyle{\displaystyle{\displaystyle\mathrm{e}}}}  : the base of the natural logarithm : http://dlmf.nist.gov/4.2.E11
d n x superscript d 𝑛 𝑥 {\displaystyle{\displaystyle{\displaystyle\mathrm{d}^{n}x}}}  : differential : http://dlmf.nist.gov/1.4#iv

Bibliography

Equation (15), Section 25.12 of DLMF.

URL links

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