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publications

Paper Title Number 4

Published in GitHub Journal of Bugs, 2024

This paper is about fixing template issue #693.

Recommended citation: Your Name, You. (2024). "Paper Title Number 3." GitHub Journal of Bugs. 1(3).
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talks

Heegaard Splitting

Published:

This is the “3+X” seminar on Heegaard Splitting, organized by Prof. Yi Liu and Prof. Jiajun Wang in 2025 Spring at Peking University. The reference is M. Scharlemann’s Heegaard splittings of compact 3-manifolds.

Geometry of Surfaces

Published:

This is the geometry seminar organized by Ziqiang Bao in 2025 Spring at Peking University. The reference is J. Stillwell’s Geometry of Surfaces.

Isometries of CAT(0) Spaces

Published:

This is the “3+X” seminar on CAT(0) spaces, organized by Prof. Wenyuan Yang in 2025 Fall at Peking University. The reference is M. R. Bridson and A. Haefliger’s Metric Spaces of Non-Positive Curvature.

Higher-dimensional Knots

Published:

This is the “3+X” seminar on Knots and Links, organized by Prof. Yi Liu and Prof. Jiajun Wang in 2025 Fall at Peking University. The reference is D. Rolfsen’s Knots and Links.

Embedding Right-Angled Artin Groups into Mapping Class Groups

Published:

This is the “3+X” seminar on CAT(0) Cube Complexes, organized by Prof. Yi Liu, Prof. Jiajun Wang, and Prof. Wenyuan Yang in 2026 Spring at Peking University. The reference is mainly P. Schwer’s CAT(0) Cube Complexes: An Introduction.

Fixed Point Properties of Group Actions on Trees

Published:

I introduced the group actions on trees, and discussed which groups must act with a fixed point on every tree. A central example is \(\mathrm{SL}_2(\mathbb{Z})\), which can act on a tree without fixed points, while \(\mathrm{SL}_3(\mathbb{Z})\) always fixes a point. Notes

teaching

Teaching experience 1

Undergraduate course, University 1, Department, 2014

This is a description of a teaching experience. You can use markdown like any other post.

Teaching experience 2

Workshop, University 1, Department, 2015

This is a description of a teaching experience. You can use markdown like any other post.