Bojun Zhao

My research

• Left-orderability in Dehn fillings of pseudo-Anosov mapping tori, preprint (2026), available at https://arxiv.org/abs/2604.04629.

• (Joint with Hyungryul Baik and Chenxi Wu) Reconstruction of Anosov flows from infinity, preprint (2024), available at https://arxiv.org/abs/2407.07634.

• Co-orientable taut foliations in Dehn fillings of pseudo-Anosov mapping tori with co-orientation-reversing monodromy, Advances in Mathematics, 492 (2026): 110889. https://doi.org/10.1016/j.aim.2026.110889.

Here are some examples of mapping tori with co-orientation-reversion monodromy (data from Nathan Dunfield).  See here for more information.

• Left orderability and taut foliations with orderable cataclysm, Mathematical Research Letters, Volume 32 (2025) Number 3. https://doi.org/10.4310/MRL.250731180608

• Left orderability and taut foliations with one-sided branching, Comment. Math. Helv., online published (2025). https://doi.org/10.4171/cmh/602.

Here is a Pre-recording lightning talk for this work in Tech Topology Conference (2022).

• Left orderability, foliations, and transverse (π_1, R) structures for 3-manifolds with sphere boundary, preprint (2021), available at https://arxiv.org/abs/2107.09272.

• Extensions of immersions of surfaces into R^3, preprint (2019), available at https://arxiv.org/abs/1906.04294. 

• The extending surfaces of immersions into surfaces, preprint (2018), available at https://arxiv.org/abs/1812.06245.