x_F5:= FiniteField(5);; x_F5x:= PolynomialAlgebra(x_F5);; x_f:= x_F5x.1^2+2;; x_PR:= PowerSeriesRing(x_F5,x_f);; PA:= PolynomialAlgebra(x_PR);; CoefficientRing(PA);