I gave a colloquium talk in the [[http://math.skku.ac.kr|math department of Sungkyunkwan University]] on 9 April 2009. Here are the slides and worksheets I used in the talk:

  * slides pdf: [[attachment:skku-sage.pdf]]
  * slides source: [[attachment:skku-sage.tex]]
  * the Cython worksheet: [[attachment:Cython.sws]]
  * the ginkgo leaves @interact demo: [[attachment:leaves.sws]]
  * the public worksheet I showed is at [[https://sagenb.kaist.ac.kr:8066/home/pub/5/]]