From veering triangulations to convergence actions and back again
Abstract
Suppose that M is a finite-volume cusped hyperbolic three-manifold, equipped with a veering triangulation π±. We prove that the action of the fundamental group of M on the veering two-sphere is a geometrically finite convergence action. Applying a result of Yaman, we deduce that the veering two-sphere is equivariantly homeomorphic to the boundary of hyperbolic space. As an application, we obtain Cannon-Thurston maps associated to veering triangulations. If π± is layered we recover the classical Cannon-Thurston map. If it is not we obtain Cannon-Thurston maps that do not come from surface subgroups. These are the first such examples in the cusped case. Finally, we implement an algorithm to draw approximations of these Cannon-Thurston maps. This improves upon previous approximations obtained by Thurston and others.
Related
- Veering triangulations of once-punctured torus bundles are unique
- Three-manifolds that do not admit veering triangulations
- Drilling veering triangulations with applications to pseudo-Anosov flows
- Recognizing convergence actions as proper isometric actions on hyperbolic spaces
- Convergence of spectral smoothings from compact quantum group actions
BibTeX
@misc{manning2026from,
title = {{From veering triangulations to convergence actions and back again}},
author = {Jason Fox Manning and Saul Schleimer and Henry Segerman},
howpublished = {arXiv},
year = {2026},
month = sep,
doi = {10.48550/arxiv.2609.14598},
eprint = {2609.14598},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2609.14598},
note = {CC0},
}
RIS
TY - UNPB
TI - From veering triangulations to convergence actions and back again
AU - Jason Fox Manning
AU - Saul Schleimer
AU - Henry Segerman
PY - 2026
DA - 2026/09/13
PB - arXiv
DO - 10.48550/arxiv.2609.14598
UR - https://arxiv.org/abs/2609.14598
AB - Suppose that M is a finite-volume cusped hyperbolic three-manifold, equipped with a veering triangulation π±. We prove that the action of the fundamental group of M on the veering two-sphere is a geometrically finite convergence action. Applying a result of Yaman, we deduce that the veering two-sphere is equivariantly homeomorphic to the boundary of hyperbolic space. As an application, we obtain Cannon-Thurston maps associated to veering triangulations. If π± is layered we recover the classical Cannon-Thurston map. If it is not we obtain Cannon-Thurston maps that do not come from surface subgroups. These are the first such examples in the cusped case. Finally, we implement an algorithm to draw approximations of these Cannon-Thurston maps. This improves upon previous approximations obtained by Thurston and others.
ER -