Works of Theon of Smyrna were strongly influenced by Pythagoras, the Greek philosopher and mathematician known for what?
Theon of Smyrna Theon of Smyrna (Greek: Θέων ο Σμυρναίος "Theon o Smyrneos", "gen." Θέωνος "Theonos"; fl. 100 CE) was a Greek philosopher and mathematician, whose works were strongly influenced by the Pythagorean school of thought. His surviving "On Mathematics Useful for the Understanding of Plato" is an introductory survey of Greek mathematics.
On the Universe De mundo (Greek: Περὶ Κόσμου ), known in English as On the Universe, is the work of an unknown author who wrote under the name of Aristotle. Because of this, the author is referred to as a Pseudo-Aristotle. The date of the work is uncertain; it has been argued that it was composed before 250 BC or between 350 and 200 BC. It is found under the Bekker numbers 391–401. It should not be confused with "On the Heavens".