If the given NCRing has central elements of the specified degree, this method returns a basis for the space of central elements in that degree.
i1 : B = threeDimSklyanin(QQ,{1,1,-1},{x,y,z}) --Calling Bergman for NCGB calculation. --running: bergman -i /var/folders/46/9b86vqxj4hjcngvy7kd7sb140000gn/T/M2-12420-0/0.init -on-error exit --silent > /var/folders/46/9b86vqxj4hjcngvy7kd7sb140000gn/T/M2-12420-0/3.ter ... Complete! o1 = B o1 : NCQuotientRing |
i2 : centralElements(B,2) | 2 2 | o2 = | x yx+xy y | o2 : NCMatrix |
i3 : centralElements(B,3) | 3 3 | o3 = | y -yxz+xyz-x | o3 : NCMatrix |