Leonhard Euler (mathematician)

Leonhard Euler was an 18th-century Swiss mathematician and physicist who made significant contributions to various fields, including calculus, graph theory, and number theory. He introduced important concepts such as the mathematical function, Euler's formula (connecting complex numbers and trigonometry), and the Euler characteristic in topology. His prolific work includes over 800 papers and books, shaping modern mathematics. Euler is known for his clarity and innovation, making complex ideas more accessible, and he remains influential in mathematics and engineering today. His legacy includes many mathematical symbols, such as "f(x)" for functions and the constant "e."