Procedure from library nctools.lib (see nctools_lib).
Usage:
rightNF(I); v a poly/vector, M an ideal/module
Purpose:
compute a right normal form of v w.r.t. M
Return:
poly/vector (as of the 1st argument)
Example:
LIB "nctools.lib";
LIB "ncalg.lib";
ring r = 0,(x,d),dp;
def S = nc_algebra(1,1); setring S; // Weyl algebra
ideal I = x; I = std(I);
poly p = x*d+1;
NF(p,I); // left normal form
==> 0
rightNF(p,I); // right normal form
==> 1
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