English

Transverse measures to infinite type laminations

Geometric Topology 2023-08-21 v2

Abstract

We study the cone of transverse measures to a fixed geodesic lamination on an infinite type hyperbolic surface. Under simple hypotheses on the metric, we give an explicit description of this cone as an inverse limit of finite-dimensional cones. We study the problem of when the cone of transverse measures admits a base and show that such a base exists for many laminations. Moreover, the base is a (typically infinite-dimensional) simplex (called a Choquet simplex) and can be described explicitly as an inverse limit of finite-dimensional simplices. We show that on any fixed infinite type hyperbolic surface, every Choquet simplex arises as a base for some lamination. We use our inverse limit description and a new construction of geodesic laminations to give other explicit examples of cones with exotic properties.

Keywords

Cite

@article{arxiv.2209.00164,
  title  = {Transverse measures to infinite type laminations},
  author = {Mladen Bestvina and Alexander J. Rasmussen},
  journal= {arXiv preprint arXiv:2209.00164},
  year   = {2023}
}

Comments

Finally version, to appear in Commentarii Mathematici Helvetici

R2 v1 2026-06-28T00:31:55.876Z