If the current Lie algebra has no differential, then 0 is returned.
i1 : L=lieAlgebra({a,b},genSigns=>{1,0},genWeights=>{{2,0},{2,1}},diffl=>true) o1 = L o1 : LieAlgebra |
i2 : L.genDiffs={L.zz,a} o2 = {0, a} o2 : List |
i3 : d=diffLie() o3 = d o3 : DerLie |
i4 : d b b a o4 = (3/2)(b a a) o4 : L |