Featuring Edward Crane. James Grime also discusses this: https://www.youtube.com/watch?v=5qu3WETuf6c Twisted Torus video: https://www.youtube.com/watch?v=3_VydFQmtZ8 Nash shared both the Nobel and Abel Prizes. Full details. Nobel: http://www.nobelprize.org/nobel_prizes/economic-sciences/laureates/1994/ Abel: http://www.abelprize.no/c63466/seksjon/vis.html?tid=63467&strukt_tid=63466 Edward Crane at the University of Bristol: http://www.maths.bris.ac.uk/~maetc/ Torus Balloon at Maths Gear: http://bit.ly/TorusBalloon NUMBERPHILE Website: http://www.numberphile.com/ 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 Support us on Patreon: http://www.patreon.com/numberphile Brady's videos subreddit: http://www.reddit.com/r/BradyHaran/ A run-down of Brady's channels: http://www.bradyharan.com/ Sign up for (occasional) emails: http://eepurl.com/YdjL9