Fragments on Pontic Histories is the heading this site attaches to Diophantus of Alexandria. The name Diophantus is the heading.
The Ἀριθμητικά (and polygonal numbers) are the books later readers attach to this mathematician; they are not this title. Fermat is later Latin margin. It is this heading as listed, not a recovered Pontic historian.
Diophantus of Alexandria Fragments on Pontic Histories in Greek in PDF
Diophantus of Alexandria Fragments on Pontic Histories in Greek in MD
| t1-3 | ΠΟΝΤΙΚΑΙ ΙΣΤΟΡΙΑΙ. |
| 1 | Schol. Apoll. Rh. III, 242: Διοφάνης (l. Διόφαντος) ἐν τῇ αʹ τῶν Ποντικῶν ἱστοριῶν Ἀντιόπην φησὶν Αἰήτου μητέρα. Προγενέστερον δέ φασι τὸν Ἄψυρτον Μηδείας γενέσθαι ἐξ Ἀστεροδείης τῆς Ὠκεανοῦ καὶ Τηθύος θυγατρός. |
| 2 | Stephan. Byz.: Λιβυστῖνοι, ἔθνος παρακείμενον Κόλχοις, ὡς Διόφαντος ἐν Πολιτικοῖς (l. Ποντικοῖς). |
| 3 | Idem: Ἄβιοι, ἔθνος Σκυθικόν ... Ἀλέξανδρος ἐν τῷ Περὶ Εὐξείνου Πόντου, ὡς Διόφαντος, εἶπεν οὕτω λέ γεσθαι αὐτοὺς διὰ τὸ τὸν Ἀβιανὸν ποταμὸν κατοικεῖν. |