
theorem
  0_.(F_Complex) is non Hurwitz
proof
  eval(0_.(F_Complex),1_F_Complex) = 0.F_Complex by POLYNOM4:17;
  then 1_F_Complex is_a_root_of 0_.(F_Complex) by POLYNOM5:def 7;
  hence thesis by COMPLEX1:6,COMPLFLD:8;
end;
