| #### D.4.27.4 radicalZ Procedure from library `primdecint.lib` (see primdecint_lib). Usage: radicalZ(I); I ideal The coefficients must be ZZ. Return: the radcal of the input ideal Example:
    LIB "primdecint.lib";
    ring R=integer,(a,b,c,d),dp;
    ideal I1=9,a,b;
    ideal I2=3,c;
    ideal I3=11,2a,7b;
    ideal I4=13a2,17b4;
    ideal I5=9c5,6d5;
    ideal I6=17,a15,b15,c15,d15;
    ideal I=intersectZ(I1,I2);
    I=intersectZ(I,I3);
    I=intersectZ(I,I4);
    I=intersectZ(I,I5);
    I=intersectZ(I,I6);
    radicalZ(I);
    ==> _[1]=102bd
    ==> _[2]=78ad
    ==> _[3]=51bc
    ==> _[4]=39ac
    ==> _[5]=6abd
    ==> _[6]=3abc
    ideal J=intersectZ(ideal(17,a),ideal(17,a2,b));
    radicalZ(J);
    ==> _[1]=17
    ==> _[2]=a

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