Singular Manual: equiRadical

| #### D.4.22.14 equiRadical Procedure from library `primdec.lib` (see primdec_lib). Usage: equiRadical(I); I ideal Return: ideal, intersection of associated primes of I of maximal dimension. Note: A combination of the algorithms of Krick/Logar (with modifications by Laplagne) and Kemper is used. Works also in positive characteristic (Kempers 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;
    ideal pr= equiRadical(i);
    pr;
    ==> pr[1]=z2-y
    ==> pr[2]=y2z+z3+2z2+2

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