https://math.stackexchange.com/
https://mathoverflow.net/
http://www.mathsccnu.com/forum.php https://bbs.emath.ac.cn/forum.php
http://www.mathor.com/
参考链接 https://www.zhihu.com/question/27263657
https://www.zhihu.com/question/22027109
posted on 2021-06-28 19:42 beyondx 阅读(55) 评论(0) 编辑 收藏 举报
