Marinelli, K.Peters, T. J.2019-04-042019-04-042019-04-011576-9402https://riunet.upv.es/handle/10251/118975[EN] Previously, numerical evidence was presented of a self-intersecting Bezier curve having the unknot for its control polygon. This numerical demonstration resolved open questions in scientic visualization, but did not provide a formal proof of self-intersection. An example with a formal existence proof is given, even while the exact self-intersection point remains undetermined.Reconocimiento - No comercial - Sin obra derivada (by-nc-nd)Knot theoryIsotopyParametric curveExact computation for existence of a knot counterexampleArtÃculo2019-04-0410.4995/agt.2019.10928Abierto1989-4147