David Volfovich Chudnovsky[a] (born January 22, 1947) and Gregory Volfovich Chudnovsky[b] (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 π with extreme precision. Both were born in Kiev, Ukrainian SSR, Soviet Union (now Kyiv, Ukraine).
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