For the mathematician, see Diophantus. Diophantus of Alexandria - Διόφαντος ο Αλεξανδρεύς - (circa 200/214 - circa 284/298) was an ancient Greek mathematician. ...
Diophantus was a general in the service of Mithridates VI of Pontus. He was active in Mithridates' campaigns in the Bosporan Kingdom and elsewhere around the Black Sea. He defeated the Rhoxolanoi c. 100 BCE. Mithridates VI of Pontus, (132 BC- 63 BC), called Eupator Dionysius, was the king of Pontus in Asia Minor and one of Romes most formidable and successful enemies. ... Pontus was a name applied in ancient times to extensive tracts of country in the northeast of Asia Minor (modern Turkey) bordering on the Euxine (Black Sea), which was often called simply Pontos (the Main), by the Greeks. ... The Bosporan Kingdom, which was located on the Crimea peninsula, existed in the time of the Roman Empire. ... Map of the Black Sea. ...
But the Seventh General Council of Nicea (787) made ample amends for the insults of his enemies, and Theophanes, writing in 813, tells us that he was surnamed Chrysorrhoas (golden stream) by his friends on account of his oratorical gifts.
In the pontificate of Leo XIII he was enrolled among the doctors of the Church.
In particular, he draws generously from Gregory of Nazianzus, whose works he seems to have absorbed, from Basil, Gregory of Nyssa, Cyril of Alexandria, Leo the Great, Athanasius, John Chrysostum, and Epiphanius.