Part one on odd polynomials: http://youtu.be/8l-La9HEUIU A nice extra bit about complex numbers: http://youtu.be/-IJuqR6nz_Q Professor David Eisenbud is an algebraic geometer (and director of the Mathematical Sciences Research Institute at Berkeley) Hello Internet: http://www.hellointernet.fm Website: http://www.numberphile.com/ Numberphile on Facebook: http://www.facebook.com/numberphile Numberphile tweets: https://twitter.com/numberphile Google Plus: http://bit.ly/numberGplus Tumblr: http://numberphile.tumblr.com Numberphile is supported by the Mathematical Sciences Research Institute (MSRI): http://bit.ly/MSRINumberphile Videos by Brady Haran Brown papers: http://bit.ly/brownpapers A run-down of Brady's channels: http://bit.ly/bradychannels