<a href="https://en.wikipedia.org/wiki/Grigori_Perelman" id="mwAUs" rel="mw:WikiLink" title="Grigori Perelman">Grigori Perelman</a> is awarded the <a href="https://en.wikipedia.org/wiki/Fields_Medal" id="mwAUw" rel="mw:WikiLink" title="Fields Medal">Fields Medal</a> for his proof of the <a href="https://en.wikipedia.org/wiki/Poincaré_conjecture" id="mwAU0" rel="mw:WikiLink" title="Poincaré conjecture">Poincaré conjecture</a> in mathematics but refuses to accept the medal.