**Euler and e**

Leonhard Euler is a towering figure of Mathematics and Physics in the 18^{th} century, and one of the greatest mathematicians of all times. Born in 15 April 1707 in Basel (Schweiz, Switzerland) Euler’s legacy includes “e” the Euler number, with pi one of the fundamental constants of mathematics, and volumes on infinitesimal calculus, geometry, algebra and number theory. Euler lived in Saint-Petersburg, where he died on 18 September 1783, and in Berlin. Students of mathematics the world over owe him the Euler’s Identity:

described as “the most beautiful mathematical formula ever”.