ELI5: Explain Like I'm 5

Contributions of Leonhard Euler to mathematics

Leonhard Euler was a man who lived a long time ago and was really good at math. He made many important contributions to the field of mathematics that we still use today.

One of the things he did was come up with a way to solve big, complicated problems using something called calculus. Imagine you're trying to figure out how fast a ball is moving when it's thrown in the air. That's a really tough problem, but Euler figured out a way to use calculus to solve it.

Euler was also very good at working with numbers and created a lot of new mathematical symbols and formulas. He helped make math easier to understand and work with for everyone.

Another big contribution Euler made was to the field of geometry. He invented a new way to measure angles and distances on curved surfaces, like the earth. This was really useful for people trying to navigate ships or create maps.

Euler also helped create a lot of new branches of math. He worked on things like the theory of numbers, probability, and graph theory. He helped make math into the complex and fascinating field it is today.

Overall, Leonhard Euler was a very important mathematician who made many important contributions to the field of mathematics. His work has helped us understand complicated problems, create new math concepts, and make math easier to understand for everyone.