| #### D.5.9.1 re2squ Procedure from library `numerDecom.lib` (see numerDecom_lib). Usage: re2squ(ideal I);I ideal Return: ideal J defined by the polynomial system of the same number of polynomials and unknowns Example:
    LIB "numerDecom.lib";
    ring r=0,(x,y,z),dp;
    ideal I= x3+y4,z4+yx,xz+3x,x2y+z;
    def D=re2squ(I);
    setring D;
    J;

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