EBRES DE LIE ET COHOMOLOGIE D'ALGDE LIE

Lie quasi-bialgebras are natural generalisations of Lie bialgebras introduced by Drinfeld. To any Lie quasi-bialgebra structure of finite-dimensional (G, �, γ, φ ), corresponds one Lie algebra structure on D = G ⊕ G � , called the double of the given Lie quasi-bialgebra. We show that there △ � �