reserve z,z1,z2,z3,z4 for Element of F_Complex;

theorem
  for x be Element of F_Complex for v be CRoot of 1,x holds v = x
proof
  let x be Element of F_Complex;
  let v be CRoot of 1,x;
  (power F_Complex).(v,1) = x by Def2;
  hence thesis by GROUP_1:50;
end;
