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D.8.2.14 idealSplit
Procedure from library presolve.lib (see presolve_lib).
- Usage:
- idealSplit(id,timeF,timeS); id ideal and optional
timeF, timeS integers to bound the time which can be used
for factorization resp. standard basis computation
- Return:
- a list of ideals such that their intersection
has the same radical as id
Example:
| | LIB "presolve.lib";
ring r=32003,(b,s,t,u,v,w,x,y,z),dp;
ideal i=
bv+su,
bw+tu,
sw+tv,
by+sx,
bz+tx,
sz+ty,
uy+vx,
uz+wx,
vz+wy,
bvz;
idealSplit(i);
==> [1]:
==> _[1]=x
==> _[2]=u
==> _[3]=t
==> _[4]=s
==> _[5]=b
==> _[6]=wy+vz
==> [2]:
==> _[1]=z
==> _[2]=w
==> _[3]=t
==> _[4]=s
==> _[5]=b
==> _[6]=vx+uy
==> [3]:
==> _[1]=z
==> _[2]=x
==> _[3]=w
==> _[4]=u
==> _[5]=t
==> _[6]=b
==> [4]:
==> _[1]=z
==> _[2]=y
==> _[3]=x
==> _[4]=t
==> _[5]=s
==> _[6]=b
==> [5]:
==> _[1]=z
==> _[2]=y
==> _[3]=x
==> _[4]=u
==> _[5]=b
==> _[6]=tv+sw
==> [6]:
==> _[1]=z
==> _[2]=y
==> _[3]=x
==> _[4]=w
==> _[5]=t
==> _[6]=su+bv
==> [7]:
==> _[1]=w
==> _[2]=v
==> _[3]=u
==> _[4]=t
==> _[5]=s
==> _[6]=b
==> [8]:
==> _[1]=x
==> _[2]=w
==> _[3]=v
==> _[4]=u
==> _[5]=b
==> _[6]=ty+sz
==> [9]:
==> _[1]=z
==> _[2]=w
==> _[3]=v
==> _[4]=u
==> _[5]=t
==> _[6]=sx+by
==> [10]:
==> _[1]=z
==> _[2]=y
==> _[3]=x
==> _[4]=w
==> _[5]=v
==> _[6]=u
==> [11]:
==> _[1]=y
==> _[2]=v
==> _[3]=t
==> _[4]=s
==> _[5]=b
==> _[6]=wx+uz
==> [12]:
==> _[1]=y
==> _[2]=x
==> _[3]=v
==> _[4]=u
==> _[5]=s
==> _[6]=b
==> [13]:
==> _[1]=z
==> _[2]=y
==> _[3]=x
==> _[4]=v
==> _[5]=s
==> _[6]=tu+bw
==> [14]:
==> _[1]=z
==> _[2]=y
==> _[3]=w
==> _[4]=v
==> _[5]=t
==> _[6]=s
==> [15]:
==> _[1]=y
==> _[2]=w
==> _[3]=v
==> _[4]=u
==> _[5]=s
==> _[6]=tx+bz
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