代数学

四元数代数：
https://link.springer.com/book/10.1007/978-3-030-56694-4

分析学

https://math-books.github.io/theory/(Math%20Book)%20Mathematical%20Analysis%2C%202nd%20Edition%20(Tom%20M.%20Apostol)%20(1974).pdf

https://invent.ilmkidunya.com/images/Section/mathematical-analysis-css-book.pdf

https://github.com/Kobe972/matrix-analysis

https://github.com/wuzhiyi/wzy-warehouse/tree/master

华章数学丛书

https://github.com/apachecn/huazhang-math-book/tree/master

https://gitee.com/OpenDocCN/huazhang-math-book

美国研究生数学

https://github.com/luxiaodong/Book/tree/master

优化理论

书名：Lectures on Convex Optimization
作者：Yurii Nesterov
下载链接：https://math.pku.edu.cn/amel/docs/20240417092720821855.pdf

书名：Numerical Optimization
作者：Jorge Nocedal，Stephen J. Wright
下载链接：https://www.math.kent.edu/~reichel/courses/optimization/Numerical_Optimization.pdf

https://github.com/ShiqinHuo/Numerical-Optimization-Books

https://web.stanford.edu/~boyd/cvxbook/bv_cvxbook.pdf

https://github.com/TianLin0509/Communication_eBooks/tree/main

https://github.com/ShiqinHuo/Numerical-Optimization-Books/tree/master

中小学教材

https://github.com/TapXWorld/ChinaTextbook/tree/master

其他

https://github.com/Sparky-Xia/THU-Mathematics-Books

https://github.com/jingyuexing/Ebook/tree/master

https://github.com/Rafiquzzaman420/Math-Books

https://github.com/CHH3213/Books

https://github.com/gongbingg/slam

https://github.com/LunaQu4kez/SUSTech_Math_Course_Materials

https://github.com/ShahzaibWaseem/FreeSpringerBooks/tree/master

https://github.com/Abhijit2505/springer-free-books

罗素《数学原理》
https://www.finophd.eu/wp-content/uploads/2018/11/Russell-Principles-of-Mathematics.pdf

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