Definition:GenHermite: Difference between revisions

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The LaTeX DLMF and DRMF macro \GenHermite represents the generalized Hermite polynomial.

This macro is in the category of polynomials.

In math mode, this macro can be called in the following ways:

\GenHermite[\alpha]{n} produces H n α generalized-Hermite-polynomial-H 𝛼 𝑛 {\displaystyle{\displaystyle{\displaystyle H^{\alpha}_{n}}}}
\GenHermite{n} produces H n generalized-Hermite-polynomial-H 𝑛 {\displaystyle{\displaystyle{\displaystyle H_{n}}}}
\GenHermite[\alpha]{n}@{x} produces H n α ( x ) generalized-Hermite-polynomial-H 𝛼 𝑛 𝑥 {\displaystyle{\displaystyle{\displaystyle H^{\alpha}_{n}\left(x\right)}}}
\GenHermite{n}@{x} produces H n ( x ) generalized-Hermite-polynomial-H 𝑛 𝑥 {\displaystyle{\displaystyle{\displaystyle H_{n}\left(x\right)}}}

These are defined by

H 2 m μ ( x ) := const × L m μ - 1 2 ( x 2 ) , assign generalized-Hermite-polynomial-H 𝜇 2 𝑚 𝑥 const generalized-Laguerre-polynomial-L 𝜇 1 2 𝑚 superscript 𝑥 2 {\displaystyle{\displaystyle H^{\mu}_{2m}\left(x\right):={\rm const}\times L^{% \mu-\frac{1}{2}}_{m}\left(x^{2}\right),\qquad}}
H 2 m + 1 μ ( x ) := \const × x L m μ + 1 2 ( x 2 ) . assign generalized-Hermite-polynomial-H 𝜇 2 𝑚 1 𝑥 \const 𝑥 generalized-Laguerre-polynomial-L 𝜇 1 2 𝑚 superscript 𝑥 2 {\displaystyle{\displaystyle H^{\mu}_{2m+1}\left(x\right):={\rm\const}\times xL% ^{\mu+\frac{1}{2}}_{m}\left(x^{2}\right).}}
Then for μ > - 1 2 𝜇 1 2 {\displaystyle{\displaystyle\mu>-\tfrac{1}{2}}} we have orthogonality relation - H m μ ( x ) H n μ ( x ) | x | 2 μ e - x 2 d x , = 0 fragments superscript subscript generalized-Hermite-polynomial-H 𝜇 𝑚 𝑥 generalized-Hermite-polynomial-H 𝜇 𝑛 𝑥 | x superscript | 2 𝜇 superscript 𝑒 superscript 𝑥 2 d x , 0 {\displaystyle{\displaystyle\int_{-\infty}^{\infty}H^{\mu}_{m}\left(x\right)H^% {\mu}_{n}\left(x\right)|x|^{2\mu}e^{-x^{2}}dx,=0}}
for m n 𝑚 𝑛 {\displaystyle{\displaystyle m\neq n}} .

Bibliography


Page 156 of CHI.

Symbols List

H n μ superscript subscript 𝐻 𝑛 𝜇 {\displaystyle{\displaystyle{\displaystyle H_{n}^{\mu}}}}  : generalized Hermite polynomial : http://drmf.wmflabs.org/wiki/Definition:GenHermite
L n ( α ) superscript subscript 𝐿 𝑛 𝛼 {\displaystyle{\displaystyle{\displaystyle L_{n}^{(\alpha)}}}}  : Laguerre (or generalized Laguerre) polynomial : http://dlmf.nist.gov/18.3#T1.t1.r27
{\displaystyle{\displaystyle{\displaystyle\int}}}  : integral : http://dlmf.nist.gov/1.4#iv