. Dans, Processlts cle linéalisation formelle d'une stlucture de Poisson c'est 112

K. Gr, V) est une représention de climension finie cle [) : gr D< tt sur' 7; gr >( !t désigne le produit semi-direct de 91 semi-simple et cl'un idéaM. [-lne 2-cochaine c est une application antisymétrique c, Notrs clécrivons ff2, pp.91-92

. Définissons, 1 : t(X,a)Alors (1a;y1r, r'))(o) : ( otxlt(r) -p(y)f(r) -f11x, r'1y) 1oy \. /. \.r [r: coefficient cle . r A Xs A -\-r est QnQts, p.0

. Ie, {2 donne Xa A X3A X6 qui peut être obtenu à partir de .\i A X3 ^ -{.r : 0. clonc nons obtenons Q'nQ, p.0

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