星空暗流

摘要：如果很多笔记来源于同一本书，那么这里只插入链接，将具体内容放在相关书籍的博客中。下述文字来源于Franz Lemmermeyer & Norbert Schappacher的文章 Introduction to the English Edition of Hilbert's *Zahlberich... 阅读全文

摘要：以下文字摘自[Indiscrete Thoughts](http://book.douban.com/subject/3205930/), P223-224.> **Among all subjects in the undergraduate mathematics curriculum, par... 阅读全文

摘要：以下文字摘自[Indiscrete Thoughts](http://book.douban.com/subject/3205930/), P223.> **Every graduate student should study inequalities for at least one term.... 阅读全文

摘要：按：原文在[此](http://www.math.tamu.edu/~cyan/Rota/mitless.html)。文中黑体是我加的，与作者无关。### Lesson One: You can and will work at a desk for seven hours straight, ro... 阅读全文

摘要：文章来源于[此](http://www.oakland.edu/?id=9894&sid=243)Throughout his life, Paul Erdös never seemed to age. I met him in the early sixties, and I last saw h... 阅读全文

摘要：在这篇[文章](http://www.mysanco.cn/wenda/index.php?class=discuss&action=question_item&questionid=6743)中看到一个很有意思的东西> 设想你有一串数，使得你将其中一个数加上 $1$ 以后得到前后相邻的两个数的乘积... 阅读全文