Researched
Poincaré Conjecture Proved
Perelman proves (2002-03) the Poincaré conjecture with Hamilton's Ricci flow, the first Millennium Problem to be solved.
Open in the interactive tree →He posted three preprints on arXiv, then declined the Fields Medal (2006) and the Clay Prize (2010). The proof classifies three-dimensional shapes and shows how geometric flows can tame singularities.