Who solved the Poincare conjecture? What is so special about the twin prime conjecture? For answers, and more interesting questions, take this quiz! Updated - April 14, 2019 05:41 pm IST ...

Grigory Perelman proved the Poincare conjecture in 2002-2003 and turned down a $1 million prize awarded to him NEW YORK, May 31. /TASS/. US entrepreneur Elon Musk has admired Russian mathematician ...