polynomial.hermite.
hermmul
Multiply one Hermite series by another.
Returns the product of two Hermite series c1 * c2. The arguments are sequences of coefficients, from lowest order “term” to highest, e.g., [1,2,3] represents the series P_0 + 2*P_1 + 3*P_2.
P_0 + 2*P_1 + 3*P_2
1-D arrays of Hermite series coefficients ordered from low to high.
Of Hermite series coefficients representing their product.
See also
hermadd
hermsub
hermmulx
hermdiv
hermpow
Notes
In general, the (polynomial) product of two C-series results in terms that are not in the Hermite polynomial basis set. Thus, to express the product as a Hermite series, it is necessary to “reproject” the product onto said basis set, which may produce “unintuitive” (but correct) results; see Examples section below.
Examples
>>> from numpy.polynomial.hermite import hermmul >>> hermmul([1, 2, 3], [0, 1, 2]) array([52., 29., 52., 7., 6.])