English

Legendrian position of veering triangulations

Geometric Topology 2026-04-09 v1 Dynamical Systems Symplectic Geometry

Abstract

We make a first step towards connecting the theory of veering triangulations and bicontact structures as tools for studying (pseudo-)Anosov flows: We show that given a veering triangulation corresponding to an Anosov flow with orientable stable and unstable foliations, the edges of the triangulation can be realized as Legendrian arcs with respect to a strongly adapted bicontact structure that supports the Anosov flow. Along the way, we show that every veering triangulation can be placed in `steady position', where each pair of edge projections that intersect in the orbit space only intersect once transversely. By a previous result of the author, this implies that horizontal surgery of veering triangulations correspond to horizontal Goodman surgery of pseudo-Anosov flows.

Keywords

Cite

@article{arxiv.2604.06690,
  title  = {Legendrian position of veering triangulations},
  author = {Chi Cheuk Tsang},
  journal= {arXiv preprint arXiv:2604.06690},
  year   = {2026}
}

Comments

60 pages, 33 figures