# Aristaeus the Elder

**Aristaeus the Elder** (Greek: Ἀρισταῖος ὁ Πρεσβύτερος; 370 – 300 BC) was a Greek mathematician who worked on conic sections. He was a contemporary of Euclid.

This article includes a list of references, related reading or external links, but its sources remain unclear because it lacks inline citations. (October 2012) |

## Life

Only little is known of his life. The mathematician Pappus of Alexandria refers to him as Aristaeus the Elder. Pappus gave Aristaeus great credit for a work entitled *Five Books concerning Solid Loci* which was used by Pappus but has been lost. He may have also authored the book *Concerning the Comparison of Five Regular Solids*. This book has also been lost; we know of it through a reference by the Greek mathematician Hypsicles.

Heath 1921 notes, "Hypsicles (who lived in Alexandria) says also that Aristaeus, in a work entitled *Comparison of the five figures*, proved that the same circle circumscribes both the pentagon of the dodecahedron and the triangle of the icosahedron inscribed in the same sphere; whether this Aristaeus is the same as the Aristaeus of the Solid Loci, the elder contemporary of Euclid, we do not know."[1]

## References

- Thomas Little Heath (1908). "The thirteen books of Euclid's Elements".

## Further reading

- Vogel, Kurt (1970). "Aristaeus".
*Dictionary of Scientific Biography*.**1**. New York: Charles Scribner's Sons. pp. 245–246. ISBN 0-684-10114-9.