Books

Please feel free to use the PDF files below under the terms specified in the licenses.

• Everyone is invited to purchase the published versions within his/her budget.
• I don't earn much by writing books: the point is to help propagate the values of Open Knowledge to the authors and publishers in China, as well as to prove its profitability.
• New or revised editions will only appear after the old ones are sold out, so your support will really make a change.

初等代数 (Elementary algebra, in Chinese)

Currently a pipedream. Designed for freshman-level linear algebra in STEM programs. It might incorporate SageMath.

有限 Lie 型群表示理论讲义 (Lectures on the representation theory of finite groups of Lie type, in Chinese)

Planning.

代数学方法：卷二 (Methods of algebra: Volume 2, in Chinese)

Submitted to the Higher Education Press (Beijing) for publication. Online version PDF is available.

模形式初步 (Introduction to modular forms, in Chinese)

Published by the Science Publishing (Beijing), June 2020. ISBN: 978-7-03-064531-9. The revised version is now in print. Online version PDF with Errata to the original version and Errata to the revised version.

There are some minor differences between the online version and the published one. Please check the PDF above if you spot some typo.

Source codes are available on GitHub and Gitee. Comments are welcome and will be incorporated into the next edition or reprint.

代数学方法：卷一 (Methods of algebra: Volume 1, in Chinese)

Published by the Higher Education Press (Beijing), January 2019. ISBN: 978-7-04050725-6. Revised online version PDF (February 2023), corresponding to the second print. There is an Errata.

If needed, one can consult original online version PDF together with its Errata. It is almost identical with the published one.

Source codes are available on GitHub and Gitee. Comments are welcome and will be incorporated into the next revision.