2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/78497We show that on the dual of a Lie algebra $\g$ of dimension $d$, the star-product recently introduced by M. Kontsevich is equivalent to the Gutt star-product on $\g^\ast$. We give an explicit expression for the operator realizing the equivalence between these star-products.15 pages, 4 figures, to appear in Lett. Math. Phys. Vol. 48 (1999)Quantum Algebratext