| Nicolas Fuss | |
|---|---|
| Born | 30 January 1755 Basel, Switzerland |
| Died | 4 January 1826 (aged 70) St. Petersburg, Russia |
| Nationality | Swiss |
| Fields | Mathematics |
| Doctoral advisor | Leonhard Euler |
Nicolas Fuss (30 January 1755 – 4 January 1826), also known as Nikolai Fuss, was a Swiss mathematician.
Fuss was born in Basel, Switzerland. He moved to Saint Petersburg to serve as a mathematical assistant to Leonhard Euler from 1773–1783, and remained there until his death. He contributed to spherical trigonometry, differential equations, the optics of microscopes and telescopes, differential geometry, and actuarial science. He also contributed to Euclidean geometry, including the problem of Apollonius.
In 1797, he was elected a foreign member of the Royal Swedish Academy of Sciences. From 1800–1826, Fuss served as the permanent secretary to the Academy of Sciences in St. Petersburg. He died in St. Petersburg.
Fuss' theorem for bicentric quadrilaterals