The Witch of Agnesi is a person and a math curve -and A Google Doodle!
Agnesi is believed to be the first woman in the Western world to gain a reputation as a mathematician.
The mathematical curve named after her is achieved by drawing a line from the source through the circle of radius.
Its real-life uses were only fully recognised in the late 20th and early 21st centuries, by physicists and mathematicians working with x-rays, optical lines, and electrical circuits.
Born on 16 May 1718 to a wealthy Milanese silk merchant, Agnesi mastered several modern languages, as well as Latin, Greek, Hebrew, in her childhood.