births
Paul Chernoff, American mathematician and poet (died 2017)
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Paul Chernoff
American mathematician (1942–2017)
Paul Robert Chernoff was an American mathematician, specializing in functional analysis and the mathematical foundations of quantum mechanics. He is known for Chernoff's Theorem, a mathematical result in the Feynman path integral formulation of quantum mechanics. He was also the…Source: Wikipedia (CC BY-SA)
June 21
Day of the year
June 21 is the 172nd day of the year in the Gregorian calendar; 193 days remain until the end of the year.Source: Wikipedia (CC BY-SA)