pith. machine review for the scientific record. sign in

arxiv: 1211.4787 · v1 · submitted 2012-11-20 · 🧮 math.GT

Recognition: unknown

Genus bounds bridge number for high distance knots

Authors on Pith no claims yet
classification 🧮 math.GT
keywords bridgegenusnumbersurfacedistanceknotnon-trivialsurgery
0
0 comments X
read the original abstract

If a knot K in a closed, orientable 3-manifold M has a bridge surface T with distance at least 3 in the curve complex of T - K, then the genus of any essential surface in its exterior with non-empty, non-meridional boundary gives rise to an upper bound for the bridge number of K with respect to T. In particular, a nontrivial, aspherical, and atoroidal knot K with such a bridge surface has its bridge number bounded by 5 if K has a non-trivial reducing surgery; 6 if K has a non-trivial toroidal surgery; and 4g + 2 if K is null-homologous and has Seifert genus g.

This paper has not been read by Pith yet.

discussion (0)

Sign in with ORCID, Apple, or X to comment. Anyone can read and Pith papers without signing in.