Formula:KLS:09.08:41: Difference between revisions

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Latest revision as of 08:35, 22 December 2019


2 n ! Γ ( λ ) 0 H n ( t x ) t n + 2 λ - 1 e - t 2 𝑑 t = C n λ ( x ) 2 𝑛 Euler-Gamma 𝜆 superscript subscript 0 Hermite-polynomial-H 𝑛 𝑡 𝑥 superscript 𝑡 𝑛 2 𝜆 1 superscript 𝑡 2 differential-d 𝑡 ultraspherical-Gegenbauer-polynomial 𝜆 𝑛 𝑥 {\displaystyle{\displaystyle{\displaystyle\frac{2}{n!\Gamma\left(\lambda\right% )}\int_{0}^{\infty}H_{n}\left(tx\right)t^{n+2\lambda-1}{\mathrm{e}^{-t^{2}}}dt% =C^{\lambda}_{n}\left(x\right)}}}

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
H n subscript 𝐻 𝑛 {\displaystyle{\displaystyle{\displaystyle H_{n}}}}  : Hermite polynomial H n subscript 𝐻 𝑛 {\displaystyle{\displaystyle{\displaystyle H_{n}}}}  : http://dlmf.nist.gov/18.3#T1.t1.r28
e e {\displaystyle{\displaystyle{\displaystyle\mathrm{e}}}}  : the base of the natural logarithm : http://dlmf.nist.gov/4.2.E11
C n μ subscript superscript 𝐶 𝜇 𝑛 {\displaystyle{\displaystyle{\displaystyle C^{\mu}_{n}}}}  : ultraspherical/Gegenbauer polynomial : http://dlmf.nist.gov/18.3#T1.t1.r5

Bibliography

Equation in Section 9.8 of KLS.

URL links

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