RT Journal Article T1 Universal knots A1 Montesinos Amilibia, José María A1 Hilden, Hugh Michael A1 Lozano Imízcoz, María Teresa AB In an unpublished preprint W. Thurston showed the existence of a six component link in the 3-sphere such that every three-manifold can be expressed as a branched cover of the 3-sphere branched over this link. He called links with this property "universal links'' and asked if a universal knot exists. The authors confirm this by showing that any link can be embedded in the branch locus of a 3-sphere branched covering of a 3-sphere branched over a knot PB American Mathematical Society SN 0273-0979 YR 1983 FD 1983 LK https://hdl.handle.net/20.500.14352/64699 UL https://hdl.handle.net/20.500.14352/64699 LA eng DS Docta Complutense RD 9 abr 2025