Contact
Contact
Email: wangdaxun@mail.tsinghua.edu.cn, daxunw@gmail.com.
Address: Yau Mathematical Science Center, Tsinghua University, Beijing, China, 100084.
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I am a Postdoctoral Fellow at Yau Mathematical Science Center, Tsinghua University. I received my PhD from SUNY at Buffalo under the supervision of Prof. Johanna Mangahas.
My current research interest lies in Geometric Group Theory. I am thinking about groups acting on trees, CAT(0) groups and cube complexes and profinite properties of discrete groups. Here is my CV.
Research
Research
Boundary actions of CAT(0) spaces: topological freeness and applications to C*-algebras, with Xin Ma and Wenyuan Yang. Preprint (2025).
Boundary actions of Bass-Serre Trees and the applications to C*-algebras, with Xin Ma and Wenyuan Yang. Preprint (2025).
On acylindrical tree actions and outer automorphism group of Baumslag-Solitar groups, with Bratati Som. Preprint (2025).
Relative profinite rigidity of Baumslag-Solitar groups. To appear in Tokyo Journal of Mathematics (2024).
The isomorphism problem for small rose generalized Baumslag-Solitar groups. Journal of Algebra (2025).
Boundary actions of CAT(0) spaces and their C*-algebras, with Xin Ma. Preprint, Not for publication (2022).
Teaching
Teaching
Instructor:
College Calculus II, 2022 Summer, SUNY at Buffalo.
Teaching Assistant:
Topics in Geometry and Topology, 2024 Fall, Tsinghua University.
Introduction to Abstract Algebra, 2023 Spring, SUNY at Buffalo.
Math Analysis for Management, 2023 Spring, SUNY at Buffalo.
Introduction to Higher Math, 2020 Spring, SUNY at Buffalo.
Honors Calculus II, 2022 Fall & 2022 Spring, SUNY at Buffalo.
Honors Calculus I, 2021 Fall, SUNY at Buffalo.
College Calculus III, 2020 Fall, SUNY at Buffalo.
College Calculus II, 2021 Spring & 2020 Spring, SUNY at Buffalo.
College Calculus I, 2022 Fall, 2022 Spring & 2019 Fall, SUNY at Buffalo.
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