English

Promoting Essential Laminations

Geometric Topology 2015-06-26 v3

Abstract

We show that every co--orientable taut foliation F of an orientable, atoroidal 3-manifold admits a transverse essential lamination. If this transverse lamination is a foliation G, the pair F,G are the unstable and stable foliation respectively of an Anosov flow. Otherwise, F admits a pair of transverse very full genuine laminations. In the second case, M satisfies the weak geometrization conjecture - either its fundamental group contains Z+Z or it is word-hyperbolic. Moreover, if M is atoroidal, the mapping class group of M is finite, and any automorphism homotopic to the identity is isotopic to the identity.

Keywords

Cite

@article{arxiv.math/0210148,
  title  = {Promoting Essential Laminations},
  author = {Danny Calegari},
  journal= {arXiv preprint arXiv:math/0210148},
  year   = {2015}
}

Comments

56 pages, 11 figures; version 3: final version, incorporates referee's suggestions