-- -*- M2-comint -*- {* hash: -218076205 *} i1 : isCommutative(QQ[x,y]) o1 = true i2 : isCommutative(QQ[x,y, SkewCommutative => true]) o2 = false i3 : isCommutative(QQ[x,dx, WeylAlgebra => {x => dx}]) o3 = false i4 :
-- -*- M2-comint -*- {* hash: -218076205 *} i1 : isCommutative(QQ[x,y]) o1 = true i2 : isCommutative(QQ[x,y, SkewCommutative => true]) o2 = false i3 : isCommutative(QQ[x,dx, WeylAlgebra => {x => dx}]) o3 = false i4 :