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For a natural number, the th Hermite polynomial is the polynomial in one variable with coefficients in the real numbers (and as such a naturally regarded as a smooth function on the real line) which is given by the following expression:
where denotes the exponential function and denotes the th derivative with respect to .
Similarly, the Hermite functions are
Regarded as smooth functions on the real line, the Hermite functions (2) form an orthonormal basis of square-integrable functions with respect to the 2-norm, in that the integration over their product satisfies
(where on the right we have the Kronecker delta).
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Named after Charles Hermite.
See also:
Wikipedia, Hermite polynomials
Keith Y. Patarroyo, A digression on Hermite polynomials (arXiv:1901.01648)
Last revised on May 4, 2020 at 16:57:50. See the history of this page for a list of all contributions to it.