Featuring Tony Feng from UC Berkeley. See our other new video today about -1/12 with Tony Padilla at https://www.youtube.com/watch?v=beakj767uG4 More links & stuff in full description below ↓↓↓ See our full -1/12 playlist:    • -1/12   Tony Feng's website: https://math.berkeley.edu/~fengt/ Note: As explained by Brady at the end of this video, Tony Feng did not know about our previous -1/12 videos when we recorded this - we decided to go ahead so you could compare his take with other ones! :) Patreon: http://www.patreon.com/numberphile Numberphile is supported by Jane Street. Learn more about them (and exciting career opportunities) at: https://bit.ly/numberphile-janestreet We're also supported by the Simons Laufer Mathematical Sciences Institute (formerly MSRI): http://bit.ly/MSRINumberphile Our thanks also to the Simons Foundation: https://www.simonsfoundation.org/ 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 Videos by Brady Haran Numberphile T-Shirts and Merch: null 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