x_gf7x:=PolynomialAlgebra(FiniteField(7));; x_gf7y:=PolynomialAlgebra(x_gf7x);; x_f:=x_gf7y.1^2+2;; x_F:=FunctionField(x_f);; x_x:=One(x_F); IsOne(x_x);