Robert Bradshaw gave a talk on Cython today at Sage Days 29:
Youtube Video: http://www.youtube.com/watch?v=osjSS2Rrvm0
Slides: http://wiki.sagemath.org/days29?action=AttachFile&do=view&target=cython-days29.pdf
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William Stein
Professor of Mathematics
University of Washington
http://wstein.org