---
name: Diophantus of Alexandria II
name_greek: Διόφαντος ὁ Ἀλεξανδρεύς
eul_aid: rqm
canonical: "https://eulogikon.org/authors/diophantus-of-alexandria-rqm"
period: Roman
dialect: Technical Koine
works_count: 5
license: "https://creativecommons.org/publicdomain/mark/1.0/"
---

# Diophantus of Alexandria II

*Διόφαντος ὁ Ἀλεξανδρεύς*

**eul_aid:** `rqm` · [HTML page](https://eulogikon.org/authors/diophantus-of-alexandria-rqm)

Diophantus of Alexandria, a 3rd century CE mathematician. Works on mathematics and number theory. Free to read and download from the Greek library archive.

## Works

- [Astronomical Calculation Methods](https://eulogikon.org/works/diophantus-alexandria-astronomical-methods-rqm-ad) — *Ἀπόσπασμα* · `rqm-ad`
- [Geometric Fragments on Circles](https://eulogikon.org/works/diophantus-alexandria-geometric-circles-rqm-ae) — *Ἀποσπάσματα περὶ Κύκλων Γεωμετρικά* · `rqm-ae`
- [On Extracting Square Roots](https://eulogikon.org/works/diophantus-alexandria-extracting-square-roots-rqm-ac) — *Ἀπόσπασμα* · `rqm-ac`
- [On Polygonal Numbers](https://eulogikon.org/works/diophantus-alexandria-polygonal-numbers-rqm-ab) — *Περὶ Πολυγωνικῶν Ἀριθμῶν* · `rqm-ab`
- [Six Books-Arithmetic](https://eulogikon.org/works/diophantus-alexandria-six-books-arithmetic-rqm-aa) — *Τὰ Ἕξ Βιβλία περὶ Ἀριθμητικῆς* · `rqm-aa`

## License and provenance

Eulogikon publishes public-domain Greek texts in cleaned, structured, readable form and makes no copyright claim over that preparation (Public Domain Mark 1.0, https://creativecommons.org/publicdomain/mark/1.0/). Author records and the underlying corpus are at https://eulogikon.org/.