2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/225656A weight system on graph homology was constructed by Rozansky and Witten using a compact hyperkähler manifold. A variation of this construction utilizing holomorphic vector bundles over the manifold gives a weight system on chord diagrams. We investigate these weights from the hyperkähler geometry point of view.LateX, 16 pages, 1 figure, Contribution to the Proceedings of the Second Meeting on Quaternionic Structures in Mathematics and Physics, Rome 6-10 September 1999Differential Geometry53C26;57M27;57R20text