Monsieur Antoine-August Le Blanc. (Sophie Germain, 1776–1831)
In the eighteenth century in France, a woman was not normally accepted in universities.
Sophie Germain hid behind the above male pseudonym "M. Le Blanc" to study at the École Polytechnique .
Beginning this way, Sophie Germain corresponded with many mathematicians and "M. le Blanc" began to have an impact be taken seriously in turn on them. Two of these mathematicians stand out: Joseph-Louis Lagrange, who soon discovered that "le Blanc" was a woman and continued the mail correspondence anywaywith other mathematicians, including Lagrange and Carl Friedrich Gaussof Germany, who eventually also discovered that he'd been exchanging ideas with a woman for three years.