| #### D.4.27.26 zeroRad Procedure from library `primdec.lib` (see primdec_lib). Usage: zeroRad(I) , I a zero-dimensional ideal Return: the radical of I Note: Algorithm of Kemper Example:
    LIB "primdec.lib";
    ring R=(5,t),(x,y),dp;
    ideal I=x^5-t,y^5-t;
    zeroRad(I);
    ==> // ** I is no standard basis
    ==> // ** I is no standard basis
    ==> // ** I is no standard basis
    ==> _[1]=x-y
    ==> _[2]=y5+(-t)

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