Works of Theon of Smyrna were strongly influenced by Pythagoras, the Greek philosopher and mathematician known for what?
Pythagoras Pythagoras of Samos ( ; ; Greek: Πυθαγόρας ὁ Σάμιος  "Pythagóras ho Sámios"  "Pythagoras the Samian" , or simply Πυθαγόρας ; Πυθαγόρης in Ionian Greek; 495 BC ) was an Ionian Greek philosopher, mathematician, and putative founder of the Pythagoreanism movement. He is often revered as a great mathematician and scientist and is best known for the Pythagorean theorem which bears his name.
Metaphysics (Aristotle) Metaphysics (Greek: τὰ μετὰ τὰ φυσικά; Latin: "Metaphysica") is one of the principal works of Aristotle and the first major work of the branch of philosophy with the same name. The principal subject is "being qua being," or being insofar as it is being. It examines what can be asserted about any being insofar as it is and not because of any special qualities it has. Also covered are different kinds of causation, form and matter, the existence of mathematical objects, and a prime-mover God.