Singular

7.7.13.0. facFirstWeyl

Usage:

facFirstWeyl(h); h a polynomial in the first Weyl algebra

Return:

list

Purpose:

compute all factorizations of a polynomial in the first Weyl algebra

Theory:

This function is a wrapper for facWeyl. It exists to make this library downward-compatible with older versions.

Assume:

basering is the first Weyl algebra

Note:

Every entry of the output list is a list with factors for one possible factorization. The first factor is always a constant (1, if no nontrivial constant could be excluded).

LIB "ncfactor.lib";
ring R = 0,(x,y),dp;
def r = nc_algebra(1,1);
setring(r);
poly h = (x^2*y^2+x)*(x+1);
facFirstWeyl(h);
==> [1]:
==>    [1]:
==> 1
==>    [2]:
==>       x
==>    [3]:
==>       xy2+1
==>    [4]:
==>       x+1