English

Low dilatation pseudo-Anosovs on punctured surfaces and volume

Geometric Topology 2020-01-01 v1

Abstract

For a pseudo-Anosov homeomorphism ff on a closed surface of genus g2g\geq 2, for which the entropy is on the order 1g\frac{1}{g} (the lowest possible order), Farb-Leininger-Margalit showed that the volume of the mapping torus is bounded, independent of gg. We show that the analogous result fails for a surface of fixed genus gg with nn punctures, by constructing pseudo-Anosov homeomorphism with entropy of the minimal order lognn\frac{\log n}{n}, and volume tending to infinity.

Keywords

Cite

@article{arxiv.1912.13299,
  title  = {Low dilatation pseudo-Anosovs on punctured surfaces and volume},
  author = {Shixuan Li},
  journal= {arXiv preprint arXiv:1912.13299},
  year   = {2020}
}

Comments

18 pages, 11 figures