# Mathematician:August Leopold Crelle

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## Mathematician

Self-educated and enthusiastic German mathematician whose most important work was founding *Journal für die reine und angewandte Mathematik*, better known as **Crelle's Journal**.

Worked for the Prussian Ministry of the Interior on the construction and planning of roads.

Worked on the planning of one of the first railways in Germany, completed in $1838$, between Berlin and Potsdam.

Noted for his ability to spot exceptional talent in young mathematicians.

A friend and benefactor of Niels Henrik Abel, whose work he was first to publish.

## Nationality

German

## History

- Born: 11 March 1780 in Eichwerder (near Wriezen), Brandenburg, Holy Roman Empire (now Germany)
- 1827: Elected to Berlin Academy with strong support of Alexander von Humboldt
- 1828: Left the Prussian Ministry of the Interior, joined the Prussian Ministry of Education and Cultural Affairs
- Summer of 1830: Visited France to studying the teaching methods used by the French
- 1841: Elected a foreign member of the Royal Swedish Academy of Sciences
- Died: 6 October 1855 in Berlin, Germany

## Publications

- 1816:
*De calculi variabilium in geometria et arte mechanica usu*(doctoral thesis)

- 1826: Founder of
*Journal für die reine und angewandte Mathematik* - 1829: Founder of
*Journal für die Baukunst*

## Notable Quotes

*The real purpose of mathematics is to be the means to illuminate reason and to exercise spiritual forces.*

## Critical View

*You cannot imagine what an excellent man [ Crelle ] is, exactly as one should be, thoughtful and yet not horribly polite like so many people, quite honest, for that matter. I am with him on as good terms as I am with you or other very good friends.*- -- Niels Henrik Abel: letter to Bernt Michael Holmboe in January $1826$

## Sources

- John J. O'Connor and Edmund F. Robertson: "August Leopold Crelle": MacTutor History of Mathematics archive

- 1991: David Wells:
*Curious and Interesting Geometry*... (previous) ... (next): A Chronological List Of Mathematicians - 1992: George F. Simmons:
*Calculus Gems*... (previous) ... (next): Chapter $\text {A}.27$: Abel ($\text {1802}$ – $\text {1829}$) - 1998: David Nelson:
*The Penguin Dictionary of Mathematics*(2nd ed.) ... (previous) ... (next):**Crelle, August Leopold**(1780-1855) - 2008: David Nelson:
*The Penguin Dictionary of Mathematics*(4th ed.) ... (previous) ... (next):**Crelle, August Leopold**(1780-1855)