# Leonhard Euler (1707-1783)

The greatest mathematician of the eighteenth century,
**Leonhard Euler** was born in Basel, Switzerland. There,
he studied under another giant of mathematics, **Jean
Bernoulli**. In 1731 Euler became a professor of physics
and mathematics at St. Petersburg Academy of Sciences.
Euler was the most prolific mathematician of all time,
publishing over *800 different books and papers*. His
influence was felt in physics and astronomy as well.

He is perhaps best known for his research into mathematical analysis. Euler's work, Introductio in analysin infinitorum (1748), remained a standard textbook in the field for well over a century. For the princess of Anhalt-Dessau, he wrote Lettres à une princesse d'Allemagne (1768-1772), giving a clear non-technical outline of the main physical theories of the time.

One can hardly write a mathematical equation without
copying Euler. Notations still in use today, such
as `e` and π, were introduced
in Euler's writings. Leonhard Euler died in 1783,
leaving behind a legacy perhaps unmatched, and
certainly unsurpassed, in the annals of mathematics.