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Comment · 9 years ago
I took Prof. Gallier (the author of this document)'s class when I was a graduate student at Penn. http://www.cis.upenn.edu/~jean/home.html

It is one of the class I enjoyed the most when I was there. Some of his other books are quite enjoyable as well.

Dr. Gallier's PhD work was focused on logic, but his current research has a lot to do with computer graphics and computational geometry. He spent a long time study graduate-level algebraic geometry and algebraic topology while having the duty to be a professor at computer science department. His stories is always an inspiration for me to learn more.

Comment · 9 years ago
Is is possible to use css selector to pick up content from html?
Comment · 11 years ago
The article is not true, Chinese president Xi Jingping's daughter goes to Harvard and many her high school class mates in China think she is just an average student.
Comment · 11 years ago
Comment · 11 years ago
Obligatory Schemes and Syzygies
Comment · 12 years ago
Any one know how Sublime Text's Command Palette alternative in emacs?

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