The text under this slot is a Doric Pythagorean excerpt Περὶ ἁρμονίας, quoted by Stobaeus 1.20.6 and printed by Holger Thesleff, The Pythagorean Texts of the Hellenistic Period (Åbo, 1965), pp. 52–53 (TLG 1180.001). It argues that the first principle is ungenerated and that the cosmos is everlasting.
Iamblichus names Aristaeus son of Damophon of Croton as Pythagoras’s successor and the husband of Theano. The Canon heading is 〈ARISTAEUS〉 Phil. (3–2 B.C.?). That is a Hellenistic Pythagorean persona, not a proof of a fifth-century autograph.
This is not the rustic culture-hero, son of Apollo and Cyrene, and not Aristaeus the Elder of the conic sections in Pappus. The Greek on this page is the Thesleff/Stobaeus treatise on harmony.
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