Mathematician:Theon of Alexandria

Mathematician

Alexandrian mathematician and astronomer.

Best known for being the father of Hypatia of Alexandria.

His edition of Euclid's The Elements was an authority until well into the $19$th century.

Not to be confused with Theon of Smyrna, known as Theon Senior or the old Theon.

Nationality

Alexandrian (a city in what is now Egypt).

History

• Born: c. 335 CE, possibly in Alexandria, Egypt
• Died: c. 405 CE

Publications

• c 364: Produced an edition of Euclid's The Elements.
• Produced commentaries on Euclid's Data and Optics.
• Produced a important commentary on Claudius Ptolemy's Almagest, and two on his Handy Tables.
• A detailed treatise on the astrolabe.
• Catoptrica, which was at one point thought to have been written by Euclid.

Also known as

In Greek: Θέων

Sources

• John J. O'Connor and Edmund F. Robertson: "Theon of Alexandria": MacTutor History of Mathematics archive

• 1926: Sir Thomas L. Heath: Euclid: The Thirteen Books of The Elements: Volume 1 (2nd ed.) ... (previous) ... (next): Introduction: Chapter $\text{V}$. The Text
• 1980: David M. Burton: Elementary Number Theory (revised ed.) ... (previous) ... (next): Chapter $1$: Some Preliminary Considerations: $1.3$ Early Number Theory