English

Dehn surgery on knots of wrapping number 2

Geometric Topology 2011-05-24 v1

Abstract

Suppose KK is a hyperbolic knot in a solid torus VV intersecting a meridian disk DD twice. We will show that if KK is not the Whitehead knot and the frontier of a regular neighborhood of KDK \cup D is incompressible in the knot exterior, then KK admits at most one exceptional surgery, which must be toroidal. Embedding VV in S3S^3 gives infinitely many knots KnK_n with a slope rnr_n corresponding to a slope rr of KK in VV. If rr surgery on KK in VV is toroidal then either all but at most three Kn(rn)K_n(r_n) are toroidal, or they are all reducible or small Seifert fibered with two common singular fiber indices. These will be used to classify exceptional surgeries on wrapped Montesinos knots in solid torus, obtained by connecting the top endpoints of a Montesinos tangle to the bottom endpoints by two arcs wrapping around the solid torus.

Keywords

Cite

@article{arxiv.1105.4287,
  title  = {Dehn surgery on knots of wrapping number 2},
  author = {Ying-Qing Wu},
  journal= {arXiv preprint arXiv:1105.4287},
  year   = {2011}
}

Comments

26 pages, 4 figures