Srinivasa Ramanujan
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Srinivasa Ramanujan
(22 December 1887 – 26 April 1920) was an Indian mathematician. Though he had almost no formal training in pure mathematics, he made substantial contributions to mathematical analysis, number theory, infinite series, and continued fractions, including solutions to mathematical problems then considered unsolvable.
1913 passport photograph
Ramanujan's birthplace on 18 Alahiri Street, Erode, now in Tamil Nadu
Ramanujan's home on Sarangapani Sannidhi Street, Kumbakonam
K Ananda Rau seated with Ramanujan
G. H. Hardy
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Godfrey Harold Hardy was an English mathematician, known for his achievements in number theory and mathematical analysis. In biology, he is known for the Hardy–Weinberg principle, a basic principle of population genetics.
Hardy, c. 1927
Charles F. Wilson, Srinivasa Ramanujan (centre), G. H. Hardy (extreme right), and other scientists at Trinity College at the University of Cambridge, c. 1910s