BBC NEWS | Science/Nature | Maths genius declines top prizeGrigory Perelman, the Russian who seems to have solved one of the hardest problems in mathematics, has declined one of the discipline's top awards. Dr Perelman was to have been presented with the prestigious Fields Medal by King Juan Carlos of Spain, at a ceremony in Madrid on Tuesday. In 2002, the mathematician claimed to have solved a century-old problem called the Poincare Conjecture. So far, e
asahi.com：「ポアンカレ予想」解決の？ロシア数学者、雲隠れ - 国際
