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The solution to the Poincare's conjecture, one of the greatest unsolved math problems of the 20th century, was by the unknown Grigory Perelman who worked on his own and merely posted his solution on the internet.  He had never been offered a permanent job and was critical of the lack of openness among mathematical experts as he described a rare exception:<ref>http://www.notablebiographies.com/supp/Supplement-Mi-So/Perelman-Grigory.html (emphasis added)</ref>   

The solution to the Poincare's conjecture, one of the greatest unsolved math problems of the 20th century, was by the unknown Grigory Perelman who worked on his own and merely posted his solution on the internet.  He had never been offered a permanent job and was critical of the lack of openness among mathematical experts as he described a rare exception:<ref>http://www.notablebiographies.com/supp/Supplement-Mi-So/Perelman-Grigory.html (emphasis added)</ref>   

 

{{cquote|He actually told me a couple of things that he published a few years later. He did not hesitate to tell me. Hamilton's openness and generosity—it really attracted me. '''I can't say that most mathematicians act like that'''.}}

{{cquote|He actually told me a couple of things that he published a few years later. He did not hesitate to tell me. Hamilton's openness and generosity—it really attracted me. '''I can't say that most mathematicians act like that'''."}}

 

At great monetary sacrifice, Perelman refused to accept the awards conferred on him by experts after they eventually recognized the brilliance of his proof.

At great monetary sacrifice, Perelman refused to accept the awards conferred on him by experts after they eventually recognized the brilliance of his proof.