Leonhard Euler was born on April 15, 1707 in Basel, Switzerland. One of the Switzerland's greatest mathematicians and physicists who introduced much of the mathematical terminology and notation that we use today. Most notable he introduced the concept of a function and the letter "e" as the base of the natural logarithm.

** Leonhard Euler is a member of Mathematician**
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## Some Leonhard Euler images

## About

One of the Switzerland's greatest mathematicians and physicists who introduced much of the mathematical terminology and notation that we use today. Most notable he introduced the concept of a function and the letter "e" as the base of the natural logarithm.

## Before Fame

He started learning at the University of Basel at the age of 13.

## Trivia

He made important discoveries in various fields, including astronomy and calculus.

## Family Life

He married Katharina Gsell on January 7, 1734.

## Associated With

Isaac Newton was another great Mathematician.