D.7.1.15 idealSimplify

Procedure from library presolve.lib (see presolve_lib).

Usage:

idealSimplify(id); id ideal

Return:

ideal I = eliminate(Id,m) m is a product of variables which are only linearly involved in the generators of id

Example:

LIB "presolve.lib";
ring r=0,(x,y,z,w,t),dp;
ideal i=
t,
x3+y2+2z,
x2+3y,
x2+y2+z2,
w2+z;
ideal j=idealSimplify(i);
ideal k=eliminate(i,zyt);
reduce(k,std(j));
→ _[1]=0
→ _[2]=0
reduce(j,std(k));
→ _[1]=0
→ _[2]=0