Leonhard Euler Trivia Questions

Euler was Swiss-born, but he worked primarily at the St. Petersburg Academy in Russia (with a 25-year stint in Berlin, Germany). So the statement is true, not false—wait, correct: It's true. Let me rephrase: Actually, the statement is true. I'll swap: Euler was born in Basel, Switzerland, and worked in St. Petersburg and Berlin. This statement is true. To make a false one: 'Euler never lived outside Switzerland.' That's false. I'll generate a corrected false statement below.

In 1736, Euler proved it was impossible to cross all seven bridges exactly once, creating the first graph theory proof.

Euler was prolific even after losing his sight in 1771, dictating complex mathematics to scribes. His output actually increased post-blindness.

Euler popularized π, but the symbol was first used by Welsh mathematician William Jones in 1706. Euler adopted it later in his 1737 work.

The Four Color Theorem was conjectured in 1852 by Francis Guthrie, decades after Euler's death. Euler did work on planar graphs, however.

Euler first used the notation f(x) in his 1734 paper 'De progressionibus', standardizing how mathematicians denote functions.

Euler won the Paris Academy's grand prize twelve times, including for his work on lunar theory and ship masts.

Euler invented the term 'imaginary numbers' and first used the symbol i in his 1777 memoir, though it became standard later.