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. Complete! o1 = B o1 : NCQuotientRing |
i2 : centralElements(B,2) o2 = | x^2 y*x+x*y y^2 | o2 : NCMatrix |
i3 : centralElements(B,3) o3 = | y^3-y*x*z+x*y*z-x^3 | o3 : NCMatrix |
The object centralElements is a method function.