Eudoxus of Cnidus, Greek philosopher and astronomer who has expanded on Plato's ideas (or 355 BC) (b. 410 BC or 408 BC)
Seuthes I, king of the Odrysian Thracians from 424 BC until 410 BC.
425 BC–410 BC for religious purposes in dedication to Zeus by the Eleutherios (Freedom): a cult founded after the Persian War.
It traces the early history of irrational numbers from their first discovery (in Thebes between 430 and 410 BC, Knorr speculates), through the work of Theodorus of Cyrene, who showed the irrationality of the square roots of the integers up to 17, and Theodorus' student Theaetetus, who showed that all non-square integers have irrational square roots.