polynomial.hermite.
hermsub
Subtract one Hermite series from another.
Returns the difference of two Hermite series c1 - c2. The sequences of coefficients are from lowest order term to highest, i.e., [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 difference.
See also
hermadd
hermmulx
hermmul
hermdiv
hermpow
Notes
Unlike multiplication, division, etc., the difference of two Hermite series is a Hermite series (without having to “reproject” the result onto the basis set) so subtraction, just like that of “standard” polynomials, is simply “component-wise.”
Examples
>>> from numpy.polynomial.hermite import hermsub >>> hermsub([1, 2, 3, 4], [1, 2, 3]) array([0., 0., 0., 4.])