Mathematician:Theon of Alexandria

Greek: Θέων.

Alexandrian mathematician and astronomer.

Best known for being the father of Hypatia of Alexandria.

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

Nationality
Alexandrian (a city in what is now Egypt).

History

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

Books and Papers

 * c 364: Produced an edition of Euclid's.
 * Produced commentaries on Euclid's Data and Optics.
 * Produced a important commentary on Ptolemy's Almagest, and two on his Handy Tables.
 * Catoptrica, which was at one point thought to have been written by Euclid.