A famous mathematical theorem explained with the help of Facebook, One Direction and a collection of Numberphile's Facebook followers.
More links & stuff in full description below ↓↓↓
Videos features Simon Pampena - https://twitter.com/mathemaniac
NOTE: Yes we should have used greater/equals symbols at around 5:15, but the meaning pretty clear and Brady and Simon live about 10,500 miles apart --- so not worth a re-shoot!
More on the theorem: http://en.wikipedia.org/wiki/Theorem_on_friends_and_strangers
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Numberphile on Facebook: http://www.facebook.com/numberphile
Numberphile tweets: https://twitter.com/numberphile
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
Tagged under: numberphile,Theorem On Friends And Strangers,ramsey theory
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