-- -*- M2-comint -*- hash: 731650511

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

o1 = A

o1 : NCQuotientRing

i2 : setWeights(A,{1,1,2,2})

o2 = A

o2 : NCQuotientRing

i3 : f = ncMap(A,A,{x,w,z,y})

o3 = NCRingMap A <--- A

o3 : NCRingMap

i4 : basis(1,A)

o4 = | w x |

o4 : NCMatrix

i5 : f_1

o5 = | 0 1 |
     | 1 0 |

              2        2
o5 : Matrix QQ  <--- QQ

i6 : basis(2,A)

o6 = | y z w^2 w*x x^2 |

o6 : NCMatrix

i7 : f_2

o7 = | 0 1 0 0  0 |
     | 1 0 0 0  0 |
     | 0 0 0 0  1 |
     | 0 0 0 -1 0 |
     | 0 0 1 0  0 |

              5        5
o7 : Matrix QQ  <--- QQ

i8 : 
