He was famed as a mathematician, and he is probably the Dionysius whose arguments are attacked by
Philodemus in his book On Signs (
Latin: De Signis),[1] where Dionysius is reported as arguing that the Sun must be very large because it reappears slowly from behind an obstruction.[2]
Notes
^Allen, J., Inference from Signs: Ancient Debates about the Nature of Evidence, p. 207. Oxford University Press. (2001).[ISBN missing]
^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).[ISBN missing]