# De utilitate mathematicae 92

Theon Smyrnaeus, De utilitate mathematicae, Paragraph 92. Ancient Greek.

Canonical: https://interlinea.aeterna-institute.org/library/greek/theon-smyrnaeus/de-utilitate-mathematicae/92

τούτων δʼ Κκαστον ἐν ἀριθμοῖς καὶ ἄλλως οὕτως ὁρᾶται· τῶν Ϛ΄ διπλάσιος ὁ ιβ΄, τριπλάσιος δὲ ὁ ιη΄, τε- τρακλάσιος δὲ ὁ κδ΄, ἡμιόλιος δὲ ὁ θ΄, ἐπίτριτος δὲ ὁ η΄· τὰ δὲ θ΄ τῶν η΄ ἐπόγδοα· τὰ δὲ ιβ΄ πρὸς μὲν θ΄ ἐπίτριτα, πρὸς δὲ η΄ ἡμιόλια, πρὸς δὲ Ϛ΄ διπλάσια· τὰ δὲ ιη΄ τῶν θ΄ διπλάσια· τούτων δὲ τὰ κζ΄ ἡμιόλια. καὶ γίνεται μὲν η΄ ἐν τῷ διὰ τεσσάρων πρὸς ϛ΄, τὰ δὲ θ΄ ἐν τῷ διὰ πέντε, τὰ δὲ ιβ΄ ἐν τῷ διὰ πασῶν, τὰ δὲ ιη΄ ἐν τῷ διὰ πασῶν καὶ διὰ πέντε· τῶν μὲν γὰρ Ϛ΄ διπλά- σια τὰ ιβ΄ ἐστιν ἐν τῷ διὰ πασῶν, τῶν δὲ ιβ΄ τὰ ιη΄ ἡμιόλιά ἐστιν ἐν τῷ διὰ πέντε, ϛʹ ιβʹ ιη΄· τὰ δὲ κδʹ πρὸς ςʹ ἐν τῷ δὶς διὰ πασῶν. τὰ δὲ θʹ τῶν ηʹ ἐν τόνῳ. τὰ δὲ ιβ΄ τῶν θʹ διὰ τεσσάρων. τὰ δὲ ιβʹ τῶν ηʹ ἐν τῷ διὰ πέντε. τὰ δὲ ιηʹ τῶν θʹ διὰ πασῶν. τὰ δὲ κζʹ τῶν ειηʹ διὰ πέντε. συνέστηκε δὲ τὸ διὰ πασῶν ιβʹ πρὸς Ϛʹ ἐκ τοῦ ἡμιολίου θʹ πρὸς ϛʹ καὶ ἐπιτρίτου ιβʹ πρὸς θʼ καὶ πάλιν ἡμιολίου ιβʹ πρὸς ηʹ καὶ ἐπιτρίτουηʹ πρὸς ϛʹ, καὶ τὰ ιηʹ πρὸς θʹ ἐκ τοῦ ιηʹ πρὸς ιβʹ ἡμιολίου καὶ ιβʹ πρὸς θʹ ἐπιτρίτου, καὶ τὰ κδʹ πρὸς ιβʹ διὰ πασῶν συν- έστηκεν ἐκ τοῦ κδʹ πρὸς ιηʹ ἐπιτρίτου καὶ τοῦ ιηʹ πρὸς ιβʹ ἡμιολίου· τὰ δὲ θʹ πρὸς ϛʹ διὰ πέντε ἐκ τοῦ θʹ πρὸς ηʹ ἐπογδόου καὶ τοῦ ηʹ πρὸς ςʹ ἐπιτρίτου, καὶ τὰ ιβʹ πρὸς ηʹ ἡμιόλιον ἐκ τοῦ ιβʹ πρὸς θʹ ἐπιτρίτου καὶ θʼ πρἐς ηʹ ἐπογδόου.

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Theon Smyrnaeus, De utilitate mathematicae, ed. Eduardus Hiller. Text: The Greek Library, from the Perseus Digital Library and other open sources, CC BY-SA 4.0. Changes: apostrophes normalised and the text divided into reading sections by Interlinea.
License: CC BY-SA 4.0 (https://creativecommons.org/licenses/by-sa/4.0/). Source: https://thegreeklibrary.pages.lisn.upsaclay.fr/works/tlg1724.tlg001.local001/.