Leonhard Euler
Swiss mathematician, physicist, and engineer (1707–1783)
8 dated entries naming Leonhard Euler, drawn from 7 separate years between 1707 CE and 1783 CE. Nothing here is written by us: each line is the sentence a Wikipedia year article used, and the link beside it opens the exact revision.
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18th century
- 1707April 15 – Leonhard Euler, Swiss mathematician and physicist (d. 1783)source
- 1731November 25 – Swiss mathematician Leonhard Euler announces his use of the irrational number e (approximately 2.71828) as the base for the concept of the natural logarithm, describing it in a letter to German mathematician Christian Goldbach.source
- 1735Leonhard Euler solves the Basel problem, first posed by Pietro Mengoli in 1644, and the Seven Bridges of Königsberg problem.source
- 1736Leonhard Euler produces the first published proof of Fermat's "little theorem".source
- 1736June 8 – Leonhard Euler writes to James Stirling describing the Euler–Maclaurin formula, providing a disconnection between integrals and sums.source
- 1742June 7 – Christian Goldbach first describes Goldbach's conjecture ("Every even number is the sum of two primes") in a letter to fellow mathematician Leonhard Euler.source
- 1748Leonhard Euler publishes Introductio in analysin infinitorum, an introduction to pure analytical mathematics, in Berlin.source
- 1783September 18 – Leonhard Euler, Swiss mathematician, physicist (b. 1707)source