%0 Journal Article
%A Montesinos Amilibia, José María
%A Hilden, Hugh Michael
%A Lozano Imízcoz, María Teresa
%T On knots that are universal
%D 1985
%@ 0040-9383
%U https://hdl.handle.net/20.500.14352/64696
%X The authors construct a cover S3→S3 branched over the "figure eight" knot with preimage the "roman link" and a cover S3→S3 branched over the roman link with preimage containing the Borromean rings L. Since L is universal (i.e. every closed, orientable 3-manifold can be represented as a covering of S3 branched over L) it follows that the "figure eight'' knot is universal, thereby answering a question of Thurston in the affirmative. More generally, it is shown that every rational knot or link which is not toroidal is universal
%~