Leonhard Euler was a Swiss mathematician, physicist, astronomer, geographer, logician and engineer who founded the studies of graph theory and topology and made pioneering and influential discoveries in many other branches of mathematics such as analytic number theory, complex analysis, and infinitesimal calculus.

How did Euler pronounce his name?

The correct pronunciation of Euler's first name, Leonhard is Leh-ohn-hahrd, where the "r" is barely pronounced, similarly to how the "r" is pronounced in a British accent. His name, Euler, is often mispronounced as you-ler or even wheel-er.

What is Euler most famous for?

Euler was a prolific mathematician whose work spanned the fields of geometry, calculus, trigonometry, algebra, number theory, physics, lunar theory, and even astronomy. ... Euler's contemporary colleagues, and even mathematicians working today, recognize him as one of the greatest mathematicians to have ever lived.