Triangulated cores of punctured-torus groups

Details Triangulated cores of punctured-torus groups Triangulated cores of punctured-torus groups

2006-05-17

arxiv.org/abs/math/0605481v1

Mathematics

Geometric Topology

38 pages, 14 figures

Scientific paper

We show that the interior of the convex core of a quasifuchsian punctured-torus group admits an ideal decomposition (usually an infinite triangulation) which is canonical in two different senses: in a combinatorial sense via the pleating invariants, and in a geometric sense via an Epstein-Penner convex hull construction in Minkowski space. The result extends to certain non-quasifuchsian punctured-torus groups, and in fact to all of them if a strong version of the Pleating Lamination Conjecture is true.

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