Reviews Perfect Rigor: A Genius and the Mathematical Breakthrough of the Century by Masha Gessen Share this: Share via email (Opens in new window) Email Click to share on Facebook (Opens in new window) Facebook Click to share on Reddit (Opens in new window) Reddit Click to share on X (Opens in new window) X Click to print (Opens in new window) Print By Science News February 12, 2010 at 12:50 pm How a mathematician solved a seemingly unsolvable problem and turned down the million-dollar prize.Houghton Mifflin Harcourt, 2009, 242 p., $26. PERFECT RIGOR: A GENIUS AND THE MATHEMATICAL BREAKTHROUGH OF THE CENTURY BY MASHA GESSEN