Formula:KLS:09.15:28

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1 2 π - H n ( y ) e - 1 2 y 2 e i x y 𝑑 y = i n H n ( x ) e - 1 2 x 2 1 2 superscript subscript Hermite-polynomial-H 𝑛 𝑦 1 2 superscript 𝑦 2 imaginary-unit 𝑥 𝑦 differential-d 𝑦 imaginary-unit 𝑛 Hermite-polynomial-H 𝑛 𝑥 1 2 superscript 𝑥 2 {\displaystyle{\displaystyle{\displaystyle\frac{1}{\sqrt{2\pi}}\int_{-\infty}^% {\infty}H_{n}\left(y\right){\mathrm{e}^{-\frac{1}{2}y^{2}}}{\mathrm{e}^{% \mathrm{i}xy}}dy={\mathrm{i}^{n}}H_{n}\left(x\right){\mathrm{e}^{-\frac{1}{2}x% ^{2}}}}}}

Proof

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Symbols List

{\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
i i {\displaystyle{\displaystyle{\displaystyle\mathrm{i}}}}  : imaginary unit : http://dlmf.nist.gov/1.9.i

Bibliography

Equation in Section 9.15 of KLS.

URL links

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