Professor at Tsinghua University

Email: sili@mail.tsinghua.edu.cn

Personal Page @ Tsinghua

I am a fan of pingpong and basketball. We have weekly pingpong and basketball event at Tsinghua. Join us!

I work in the field of mathematical physics and am interested in algebraic and geometric aspects of quantum field theory and string theory.

See Research page for details.

- The first part of the quantum mechanics note is available here: Quantum Mechanics: Basic Theory (1st update: draft Feb 1 2024) .

- Ordinary Differential Equations (2nd update: draft Jan 4 2024) .

- Classical Mechanics and Geometry

This full version of this book has been published by International Press of Boston. If you like this book, here are the links. Thanks for your support on this book series.

---- Book home: International Press of Boston .

---- 国内订购： 孔夫子 , 天猫

- Electromagnetism and Geometry

This full version of this book has been published by International Press of Boston. If you like this book, here are the links. Thanks for your support on this book series.

---- Book home: International Press of Boston .

---- 国内订购： 孔夫子 , 天猫

- Introduction to Algebraic Topology (1st update: draft June 2020)

- 几何与对称 (1st and last update: draft Dec 2018) .

See Teaching page for more.