Srinivasa Ramanujan (1887–1920)
Born 1887 CE, died 1920 CE.
Srinivasa Ramanujan Iyengar (22 December 1887 – 26 April 1920) was an Indian mathematician who worked during the early 20th century. He made substantial contributions to mathematical analysis, number theory, infinite series, and continued fractions, including solutions to mathematical problems then considered unsolvable. Ramanujan initially developed his own mathematical research in isolation. According to Hans Eysenck, "he tried to interest the leading professional mathematicians in his work, but failed for the most part. What he had to show them was too novel, too unfamiliar, and additionally presented in unusual ways; they could not be bothered." Seeking mathematicians who could better understand his work, in 1913 he began a mail correspondence with the English mathematician G. H. Hardy at the University of Cambridge. Recognising Ramanujan's work as extraordinary, Hardy arranged for him to travel to Cambridge.
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