-- -*- M2-comint -*- hash: 12692898418179572648

i1 : L = lieAlgebra{a,b}

o1 = L

o1 : LieAlgebra

i2 : d = lieDerivation{a a b,b b a}

o2 = d

o2 : LieDerivation

i3 : describe(-2 d)

o3 = a => 2 (a b a)
     b =>  - 2 (b b a)
     map => id_L
     sign => 0
     weight => {2, 0}
     source => L
     target => L

i4 : 
