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GradedLieAlgebras :: - LieDerivation

- LieDerivation -- unary negation

Synopsis

Description

The symbol - is used as notation for the negation of Lie derivations.

i1 : L = lieAlgebra{a,b}

o1 = L

o1 : LieAlgebra
i2 : d = lieDerivation{a a b,b b a}

o2 = d

o2 : LieDerivation
i3 : describe(-d)

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