Chudnovsky brothers

David Volfovich Chudnovsky}}}} (born January 22, 1947) and Gregory Volfovich Chudnovsky}}}} (born April 17, 1952) are American mathematicians and engineers known for their world-record mathematical calculations and developing the Chudnovsky algorithm used to calculate the digits of with extreme precision. Both were born in Kiev, Ukrainian SSR, Soviet Union (now Kyiv, Ukraine). Provided by Wikipedia