School of Mathematical Sciences

Peking Univsersity

Email: wjiajun AT pku DOT edu DOT cn

Office: 473

Phone: 6-7562

- Fall 2023: Geometry I
- Spring 2023: Homotopy Theory
- Fall 2022: Geometry
- Spring 2022: Differential Topology
- Fall 2021: Advanced Mathematics (A)
- Spring 2021: Homotopy Theory
- Fall 2020: Topology.
- Spring 2020: Linear Algebra B.
- Fall 2019: Topology.
- Spring 2019: Homotopy Theory.
- Fall 2018: Topology.
- Spring 2018: Differential Topology.
- Fall 2017: Calculus I.
- Spring 2017: Homotopy Theory.
- Fall 2015: Topology

- PKU topology seminar (Spring 2022: 10am-12pm on Thursdays)

- "quadrisecant" is a Mathematica program to compute the quadrisecants of a polygonal knot.
- "HFhat" computes the hat Heegaard Floer homology for a closed orientable three-manifold and the hat knot Floer homology of a null homologous knot in a closed orientable three-manifold.