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- Leonhard Euler was an eminent Swiss mathematician.
- He is nicknamed the “King of Mathematics”.
- He was also a physicist and astronomer.
- In addition, he was also known as a renowned logician and engineer.
- He founded the “graph theory”.
- He also founded the studies of topology.
- He has also made many other discoveries in the field of mathematics and physics.
- One such would be analytic number theory.
- He also invented the calculus of variations.
- With this came about his famous “Euler-Lagrange Equation”.
