数学基础

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https://blog.youkuaiyun.com/qq_27245709/article/details/53287999

https://en.wikipedia.org/wiki/Matrix_calculus

https://www.cnblogs.com/jlice/p/9276674.html

https://www.cnblogs.com/jlice/p/9276714.html

https://www.cnblogs.com/kingking512/p/8322360.html

https://www.cnblogs.com/jclian91/p/8022426.html

https://www.cnblogs.com/libinggen/p/7895103.html

https://www.cnblogs.com/libinggen/p/7882754.html

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https://blog.youkuaiyun.com/shouhuxianjian/article/details/46669365

https://blog.youkuaiyun.com/shouhuxianjian/article/details/46617815

https://blog.youkuaiyun.com/shouhuxianjian/article/details/46624207

https://blog.youkuaiyun.com/mounty_fsc/article/details/51588794

https://zh.wikipedia.org/wiki/%E7%9F%A9%E9%98%B5