Ἐπειοί

From LSJ

προγράψαντες οὖν τά τε θεωρήματα καὶ τὰ ἐπιτάγματα τὰ χρεῖαν ἔχοντα εἰς τὰς ἀποδείξιας αὐτῶν μετὰ ταῦτα γραψοῦμές τοι τὰ προκείμενα → having therefore written at the beginning the theorems and the postulates that are necessary for their proofs, we will then write out for you the propositions

Source

English (Autenrieth)

the Epeians, a tribe in North Elis, Il. 11.732, Il. 13.686, Il. 4.537.

English (Slater)

Ἐπειοί the ancient inhabitants of Elis. Ὀλύμπιος ἁγεμὼν θύγατρ' ἀπὸ γᾶς Ἐπειῶν Ὀπόεντος ἀναρπάσαις (O. 9.58) ξεναπάτας Ἐπειῶν βασιλεὺς Augeas (O. 10.35)

Russian (Dvoretsky)

Ἐπειοί: ῶν οἱ эпеи (народность в сев. Элиде) Hom.