Ancient Greek
Paragraph 84
Theon Smyrnaeus, De utilitate mathematicae 84
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πάντων δὲ τῶν κατʼ εἶδος εἰρημένων λόγων οἱ ἐν ἐλαχίστοις καὶ πρώτοις πρὸς ἀλλήλους ἀριθμοῖς ὄντες καθʼ ἕκαστον πρῶτοι λέγονται τῶν τὸν αὐτὸν λόγον ἐχόντων καὶ πυθμένες τῶν ὁμοειδῶν. οἷον διπλασίων μὲν λόγων πρῶτος καὶ πυθμὴν ὁ τῶν βʹ πρὸς ἔν· μετὰ γὰρ τοῦτον ἐν μείζοσι καὶ συνθέτοις ἀριθμοῖς λόγοι εἰσὶ διπλάσιοι ὁ τῶν δʹ πρὸς τὰ βʹ καὶ τῶν ϛʹ πρὸς τὰ γʹ καὶ ὁμοίως ἐπʼ ἄπειρον. τριπλασίων δὲ λόγων πρῶ- τος καὶ πυθμὴν ὁ τῶν γʹ πρὸς τὸ ἕν· οἱ δὲ αἰεὶ ἐν μεί- ζοσι καὶ συνθέτοις ἀριθμοῖς ἐπʼ ἄπειρον προάγουσιν. ὡσαύτως δὲ ἐπὶ τῶν ἄλλων πολλαπλασίων. ὁμοίως δὲ καὶ ἐν τοῖς ἐπιμορίοις. ἡμιολίων μὲν λόγων πρῶτος καὶ πυθμὴν ὁ τῶν γʹ πρὸς τὰ β, ἐπιτρίτων δὲ ὁ τῶν δʼ πρὸς γ΄, καὶ ἐπιτετάρτων ὁ τῶν εʹ πρὸς δʹ· οἱ δὲ ἐν μείζοσιν ὅροις καὶ συνθέτοις πάλιν ἄπειροι τὸ πλῆθος. τὸ δʼ αὐτὸ θεωρεῖται καὶ ἐπὶ τῶν ἄλλων.