| #### D.4.20.1 separator Procedure from library `mprimdec.lib` (see mprimdec_lib). Usage: separator(l); list l of prime ideals Return: list sepList; a list of separators of the prime ideals in l, i.e. polynomials p_ij, s.th. p_ij is in l[j], for all l[j] not contained in l[i] but p_ij is not in l[i] Example:
    LIB "mprimdec.lib";
    ring r=0,(x,y,z),dp;
    ideal i=(x2y,xz2,y2z,z3);
    list l=minAssGTZ(i);
    list sepL=separator(l);
    sepL;
    ==> [1]:
    ==>    x
    ==> [2]:
    ==>    y

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