Numberphile

Audible: http://www.audible.com/numberphile More links & stuff in full description below ↓↓↓ Cliff's glassware: http://bit.ly/ACME_Klein Extras for this video: https://youtu.be/6Qpfv5y-7WU More videos featuring Cliff Stoll: http://bit.ly/Cliff_Videos Cliff references A Comprehensive Introduction to Differential Geometry by Michael Spivak: http://amzn.to/2cwmdB7 Animation: Pete McPartlan Note from Cliff: Original ideas & suggestions from Peter Nguyen of Coker College and Danny Stoll of U/Chicago Amazing glasswork by Tom Adams, George Chittenden, Lucas Clarke, and Xing Wei Support us on Patreon: http://www.patreon.com/numberphile NUMBERPHILE Website: http://www.numberphile.com/ Numberphile on Facebook: http://www.facebook.com/numberphile Numberphile tweets: https://twitter.com/numberphile Subscribe: http://bit.ly/Numberphile_Sub Numberphile is supported by the Mathematical Sciences Research Institute (MSRI): http://bit.ly/MSRINumberphile Videos by Brady Haran Brady's videos subreddit: http://www.reddit.com/r/BradyHaran/ Brady's latest videos across all channels: http://www.bradyharanblog.com/ Sign up for (occasional) emails: http://eepurl.com/YdjL9 Numberphile T-Shirts: https://teespring.com/stores/numberphile Other merchandise: https://store.dftba.com/collections/numberphile