English

alpha-sloped Generalized Heegaard splittings of 3-manifolds

Geometric Topology 2015-03-19 v2

Abstract

We generalize the definition of thin position of Scharlemann and Thompson for compact orientable 3-manifolds with torus boundary components and introduce α\alpha-sloped generalized Heegaard splittings. We examine its relationship to generalized Heegaard splittings of manifolds resulting from Dehn filling. We compare alpha-sloped thin position of 3-manifolds to other types of thin position for knots and 3-manifolds and discuss how this kind of decomposition gives an organic picture of M and allows the structure of the manifold to dictate the most natural slope(s) on the boundary. Additionally, we provide illustrative examples and questions motivating the study of alpha-sloped thin position.

Keywords

Cite

@article{arxiv.1102.3135,
  title  = {alpha-sloped Generalized Heegaard splittings of 3-manifolds},
  author = {Marion Moore Campisi},
  journal= {arXiv preprint arXiv:1102.3135},
  year   = {2015}
}

Comments

21 pages, 7 figures; Revisions to theorem 3.4. The revisions do not affect theorem 1.1