I=image(f)
i1 : F=lieAlgebra({a,b,c,r3,r4,r42}, Weights => {{1,0},{1,0},{2,0},{3,1},{4,1},{4,2}},Signs=>{0,0,0,1,1,0}, LastWeightHomological=>true) o1 = F o1 : LieAlgebra
i2 : D=differentialLieAlgebra{0_F,0_F,0_F,a c,a a c,r4 - a r3} o2 = D o2 : LieAlgebra
i3 : I=lieIdeal{b c - a c,a b,b r4 - a r4} o3 = I o3 : FGLieIdeal
i4 : Q=D/I o4 = Q o4 : LieAlgebra
i5 : f=map(Q,D) o5 = f o5 : LieAlgebraMap
i6 : T=image(f) o6 = T o6 : FGLieSubAlgebra
i7 : isSurjective f o7 = true