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D.4.15.5 minAssChar

Procedure from library primdec.lib (see primdec_lib).

Usage:
minAssChar(I[,c]); i ideal, c int (optional).

Return:
list, the minimal associated prime ideals of i.

Note:
If c=0, the given ordering of the variables is used.
Otherwise, the system tries to find an optimal ordering, which in some cases may considerably speed up the algorithm.

Example:
 
LIB "primdec.lib";
ring  r = 0,(x,y,z),dp;
poly  p = z2+1;
poly  q = z3+2;
ideal i = p*q^2,y-z2;
list pr = minAssChar(i);
pr;
==> [1]:
==>    _[1]=y+1
==>    _[2]=z2+1
==> [2]:
==>    _[1]=z2-y
==>    _[2]=yz+2
==>    _[3]=y2+2z


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