摘要: 做了个梦一个处处可微的函数 伸缩变换之后处处不可微了。一条平滑的曲线被噪声扰动变得处处不可微了。 阅读全文
posted @ 2015-01-02 15:52 张文彪 阅读(320) 评论(0) 推荐(0)
摘要: The Hundred Greatest TheoremsThe millenium seemed to spur a lot of people to compile "Top 100" or "Best 100" lists of many things, includingmovies(by ... 阅读全文
posted @ 2015-01-02 14:13 张文彪 阅读(330) 评论(0) 推荐(0)