| #### D.8.1.3 simplesolver Procedure from library `ffsolve.lib` (see ffsolve_lib). Usage: simplesolver(I); I ideal solve I (system of multivariate equations) over a finite field by exhausting search Return: list L, the common roots of I as ideal Assume: basering is a finite field of type (p^n,a) Example:
    LIB "ffsolve.lib";
    ring R = (2,a),x(1..3),lp;
    minpoly=a2+a+1;
    ideal I;
    I[1]=x(1)^2*x(2)+(a)*x(1)*x(2)^2+(a+1);
    I[2]=x(1)^2*x(2)*x(3)^2+(a)*x(1);
    I[3]=(a+1)*x(1)*x(3)+(a+1)*x(1);
    simplesolver(I);
    ==> [1]:
    ==>    _[1]=x(3)+1
    ==>    _[2]=x(2)+(a)
    ==>    _[3]=x(1)+1
    ==> [2]:
    ==>    _[1]=x(3)+1
    ==>    _[2]=x(2)+(a+1)
    ==>    _[3]=x(1)+(a+1)

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