result = ambient S
Returns the ambient ring of the generating set of the Subring. This may be a PolynomialRing or QuotientRing.
i1 : R = QQ[x,y,z];
i2 : S = subring({x^2, y^2, z^2});
i3 : ambient S o3 = R o3 : PolynomialRing
i4 : Q = R / ideal(x^3 - y);
i5 : S' = subring({x^3, y^2});
i6 : ambient S' o6 = Q o6 : QuotientRing