Date in year · 1913 · The 1910s
January 16, 1913
On January 16, 1913, indian mathematician Srinivasa Ramanujan writes his first letter to G. H. Hardy at Cambridge, stating without proof various formulae involving integrals, infinite series, and continued fractions, beginning a long correspondence between the two as well as widespread recognition of Ramanujan's results.
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1913
1910s