07/31/2026
In 2002, Russian mathematician Grigori Perelman stunned the world by solving the Poincaré Conjecture, a legendary problem unsolved since 1904. Using a geometric tool called Ricci flow, he proved whether certain three-dimensional spaces are topologically equivalent to a sphere.
Perelman overcame severe geometric distortions by pioneering a "surgery" technique to cut away problematic regions. This allowed the remaining shapes to smooth out perfectly. After a rigorous multi-year review, the international mathematical community verified his groundbreaking proof as entirely correct.
Yet, Perelman’s response became legendary. He declined both the Fields Medal and a $1 million Millennium Prize, stating the truth was reward enough. He credited pioneer Richard S. Hamilton before withdrawing completely into a quiet, isolated life.