An 1896 portrait of the French mathematician Sophie Germain. She is depicted as a bust with her hair in an elaborate bun, looking to the viewer’s left. The inscription around the oval edge of the portrait states: “A la memoire de Sophie Germain philosophe. 1776. 1831.” (“In memory of Sophie Germain, philosopher. [Born] 1776. [Died] 1831.”) By Berthe Chégaray née Becher (public domain; https://commons.wikimedia.org/wiki/File:Ch%C3%A9garay_-_Sophie_Germain.png).
Today, 31 March, is the eve of the birth anniversary of the French mathematician #SophieGermain, who was born on 1 April, 250 years ago, in 1776.