-- -*- M2-comint -*- {* hash: -1042571242 *} i1 : isPolynomialRing CC o1 = false i2 : isPolynomialRing(ZZ/7[x,y]) o2 = true i3 : isPolynomialRing(QQ[x,dx, WeylAlgebra => {x => dx}]) o3 = true i4 : isPolynomialRing(GF(2)[x,y, SkewCommutative => true]) o4 = true i5 : isPolynomialRing(ZZ/101[x,y,z]/(x^2-y*z)) o5 = false i6 :