lmlib.polynomial.poly.poly_sum_coef#

lmlib.polynomial.poly.poly_sum_coef(polys)#

\(\alpha^\mathsf{T} x^q + \dots + \beta^\mathsf{T} x^r = \color{blue}{\tilde{\alpha}}^\mathsf{T} x^\tilde{q}\)

Coefficient vector \(\tilde{q}\) to sum of univariate polynomials polys, all of common variable x

Parameters

polys (tuple of Poly) – (Poly(alpha,q),... , Poly(beta,r)), list of polynomials to be summed

Returns

coefalpha_tilde - Coefficient vector \(\tilde{\alpha}\)

Return type

ndarray

Note

To get \(\tilde{q}\), see poly_sum_expo().

References

[Wildhaber2019] (Eq. 6.4)