Dionysius of Cyrene ( grc-gre, Διονύσιος ὁ Κυρηναῖος), lived c. 150 BC, was a

Stoic Stoic may refer to: * An adherent of Stoicism; one whose moral quality is associated with that school of philosophy * STOIC, a programming language * ''Stoic'' (film), a 2009 film by Uwe Boll * ''Stoic'' (mixtape), a 2012 mixtape by rapper T-Pain * ...

philosopher and

mathematician A mathematician is someone who uses an extensive knowledge of mathematics in their work, typically to solve mathematical problems. Mathematicians are concerned with numbers, data, quantity, structure, space, models, and change. History On ...

. He was a pupil of

Diogenes of Babylon Diogenes of Babylon (also known as Diogenes of Seleucia; grc-gre, Διογένης Βαβυλώνιος; la, Diogenes Babylonius; c. 230 – c. 150/140 BC) was a Stoic philosopher. He was the head of the Stoic school in Athens, and he was one o ...

and

Antipater of Tarsus Antipater of Tarsus ( el, Ἀντίπατρος ὁ Ταρσεύς; died 130/129 BC) was a Stoic philosopher. He was the pupil and successor of Diogenes of Babylon as leader of the Stoic school, and was the teacher of Panaetius. He wrote works on ...

. He was famed as a mathematician, and he is probably the Dionysius whose arguments are attacked by Philodemus in his book ''On Signs'' ( la, De Signis), where Dionysius is reported as arguing that the Sun must be very large because it reappears slowly from behind an obstruction.Barnes, J., "Pyrrhonism, Belief and Causation. Observations on the Skepticism of Sextus Empiricus", pp. 2661–2662, in ''Aufstieg und Niedergang der römischen Welt:: Geschichte und Kultur Roms im Spiegel der neueren Forschung.'' ed. Werk, Vogt, Haase, Temporini. Walter de Gruyter. (1997).

Notes

{{Stoicism Hellenistic-era philosophers from Africa Stoic philosophers 2nd-century BC Greek people 2nd-century BC philosophers