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Events on Monday 27 June 1831 1
1776 – 1831Sophie Germain (1776-1831)Died 27 June 1831, aged 55Germain was a French mathematician who made major contributions to number theory and elasticity theory despite being barred from formal study because of her sex. She corresponded with Gauss and Legendre under a male pseudonym before her work was recognized under her own name.