[GiNaC-list] to_polynomial function does not return a polynomial

[Vladimir V. Kisil]

>>>>> On Tue, 28 Dec 2021 16:41:24 +0800, Feng Feng <f.feng at outlook.com> said:

    FF> Dear all, I am using the function to_polynomial to produce a
    FF> polynomial from a expression, it seems that to_polynomial does
    FF> not return a polynomial in some cases, as illustrated in the
    FF> following example, note that it works well on expression e2,
    FF> while it does nothing on e3 (e3=e2^2), and does not return a
    FF> polynomial.

    It will if you would apply expand() method to e3 first.
-- 
Vladimir V. Kisil                 http://www.maths.leeds.ac.uk/~kisilv/
  Book:     Geometry of Mobius Transformations     http://goo.gl/EaG2Vu
  Software: Geometry of cycles          http://moebinv.sourceforge.net/