-- -*- M2-comint -*- hash: -396527238

i1 : A = skewPolynomialRing(QQ,(-1)_QQ,{w,x,y,z})
--Calling Bergman for NCGB calculation.
Complete!

o1 = A

o1 : NCQuotientRing

i2 : B = QQ{w,x,y,z}/ncIdeal{w*x+x*w,w*y+y*w,x*y+y*x}
--Calling Bergman for NCGB calculation.
Complete!

o2 = B

o2 : NCQuotientRing

i3 : f = ncMap(B,A,gens B)

o3 = NCRingMap B <--- A

o3 : NCRingMap

i4 : isWellDefined f

o4 = false

i5 : C = QQ{a,b,c}

o5 = C

o5 : NCPolynomialRing

i6 : g = ncMap(C,A,{a^3,b^2,a+b,a-b})

o6 = NCRingMap C <--- A

o6 : NCRingMap

i7 : isWellDefined g

o7 = false

i8 : 
