2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/77087Pulling back the weight system associated with the exceptional Lie algebra G_2 by a modification of the universal Vassiliev-Kontsevich invariant yields a link invariant; extending it to 3-nets, we derive a recursive algorithm for its evaluation.21 pages, many figuresQuantum AlgebraGeometric Topology57M25text