Hello, World — 写在网站上线时
This site is now live at www.zhaoqingxu.com. It serves three purposes: a professional introduction, a home for my writing, and a record of what I am learning. What will live here Research notes — short expositions of results I find useful, written so that future-me can recover the idea in ten minutes. Study notes — summaries from courses and reading seminars, in English and 中文. Records — occasional reflections on teaching, conferences, and the Ph.D. process. 为什么还要写博客 写东西是最好的学习方式。一个定理，看懂了和能讲清楚，是两回事；能讲清楚和能写下来让别人也看懂，又是两回事。这个网站就是我的"费曼笔记本"。 ...