Preprints and publications

• Thomas Barthelmé, Federico Salmoiraghi, and Chi Cheuk Tsang. There is only one transitive Anosov flow (in dimension 3, with orientable foliations, up to bicontact padding and Goodman surgeries). Preprint (2026). arXiv:2611.00977.
  (AI was used to supply one of the propositions in the paper. A transcript of the session can be found here.)
• Thomas Barthelmé, Chi Cheuk Tsang, and Jonathan Zung. Finiteness of veering triangulations. Preprint (2026). arXiv:2607.10398.
• Chi Cheuk Tsang. Legendrian position of veering triangulations. Preprint (2026). arXiv:2604.06690.
• Chi Cheuk Tsang. From pseudo-Anosov flows on graph manifolds to totally periodic flows. Preprint (2026). arXiv:2603.27362.
• Antonio Alfieri and Chi Cheuk Tsang. Heegaard Floer theory and pseudo-Anosov flows II: Differential and Fried pants. Preprint (2025). arXiv:2506.07163.
• Antonio Alfieri and Chi Cheuk Tsang. Heegaard Floer theory and pseudo-Anosov flows I: Generators and categorification of the zeta function. Preprint (2025). arXiv:2504.15420.
• Catherine Eva Pfaff and Chi Cheuk Tsang. A "cubist" decomposition of the Handel-Mosher axis bundle. Preprint (2025). arXiv:2503.16360.
• Chi Cheuk Tsang and Xiangzhuo Zeng. Minimum dilatations of pseudo-Anosov braids. Preprint (2024). arXiv:2412.01648
  (Auxiliary files for this paper can be found here.)
• Erwan Lanneau, Livio Liechti, and Chi Cheuk Tsang. Minimal stretch factors of fully-punctured orientation-reversing pseudo-Anosov maps. Transactions of the American Mathematical Society 378 (2025), no. 4, 2943-2968. doi:10.1090/tran/9350.
• Chi Cheuk Tsang. Examples of Anosov flows with genus one Birkhoff sections. Preprint (2024). arXiv:2402.00229.
• Chi Cheuk Tsang. Horizontal Goodman surgery and almost equivalence of pseudo-Anosov flows. Preprint (2024). arXiv:2401.01847.
• Chi Cheuk Tsang. On the set of normalized dilatations of fully punctured pseudo-Anosov maps. Annales de l'Institut Fourier, to appear. arXiv:2306.10245.
  (Auxiliary files for this paper can be found here.)
• Michael Landry and Chi Cheuk Tsang. Endperiodic maps, splitting sequences, and branched surfaces. Geometry and Topology 29 (2025), no. 9, 4531-4663. doi:10.2140/gt.2025.29.4531.
• Eriko Hironaka and Chi Cheuk Tsang. Standardly embedded train tracks and pseudo-Anosov maps with minimum expansion factor. Groups, Geometry, and Dynamics 19 (2025), no. 4, 1263-1317. doi:10.4171/ggd/805.
• Chi Cheuk Tsang. Constructing Birkhoff sections for pseudo-Anosov flows with controlled complexity. Ergodic Theory and Dynamical Systems 44 (2024), no. 8, 2308-2360. doi:10.1017/etds.2023.105.
• Chi Cheuk Tsang. Veering branched surfaces, surgeries, and geodesic flows. New York Journal of Mathematics 29 (2023), 1425-1495.
• Ian Agol and Chi Cheuk Tsang. Dynamics of veering triangulations: infinitesimal components of their flow graphs and applications. Algebraic and Geometric Topology 24 (2024), no. 6, 3401-3453. doi:10.2140/agt.2024.24.3401.

PhD thesis

• Chi Cheuk Tsang. Veering Triangulations and Pseudo-Anosov Flows. PhD thesis, University of California, Berkeley (2023).

Papers from an undergraduate research project

• Ki Fung Chan, Spiro Karigiannis, and Chi Cheuk Tsang. The $\mathcal L_B$-cohomology on compact torsion-free $\mathrm{G}_2$ manifolds and an application to 'almost' formality. Annals of Global Analysis and Geometry 55 (2019), no. 2, 325-369. doi:10.1007/s10455-018-9629-x.
• Ki Fung Chan, Spiro Karigiannis, and Chi Cheuk Tsang. Cohomologies on almost complex manifolds and the $\partial \bar{\partial}$-lemma. Asian Journal of Mathematics 23 (2019), no. 4, 561-584. doi:10.4310/AJM.2019.v23.n4.a2.