‘Not all smart people work at Sun.’ –Bill Joy
{ The hairy ball theorem of algebraic topology states that there is no nonvanishing continuous tangent vector field on the sphere. The theorem was first stated by Henri Poincaré in the late 19th century, and first proved in 1912 by Brouwer. | Wikipedia | Continue reading }
{ Luitzen Egbertus Jan Brouwer (1881-1966) was a Dutch mathematician and philosopher, usually cited as L. E. J. Brouwer but known to his friends as Bertus | Wikipedia | Continue reading }
