Let's make this birthday one to remember.

58 years old (Born on June 13, 1966)

Happy Birthday, Grigori Perelman! Your groundbreaking proofs in geometric topology and Riemannian geometry have left mathematicians worldwide scratching their heads—and secretly wishing they had your beard. Solving the Poincaré conjecture was impressive enough, but turning down a million-dollar prize? Now that's legendary!

While most of us struggle with basic algebra, you've casually reshaped our understanding of three-dimensional spaces. On this special day, may you find joy as infinite as the mathematical puzzles you've conquered—though we suspect you'd prefer solving another theorem over cake any day. Cheers to you, Grigori; you're truly one-of-a-kind (and probably already proving it mathematically)!