Back هيبياسي Arabic هيبياسى ARZ Metapontalı Hippas Azerbaijani ইপ্পিয়াস Bengali/Bangla Hipasus BS Hipas de Metapont Catalan ھیپاسوس CKB Hippasos z Metapontu Czech Hippasos von Metapont German Ίππασος Greek
Hippasus of Metapontum (/ˈhɪpəsəs/; Greek: Ἵππασος ὁ Μεταποντῖνος, Híppasos; c. 530 – c. 450 BC)[1] was a Greek philosopher and early follower of Pythagoras.[2][3] Little is known about his life or his beliefs, but he is sometimes credited with the discovery of the existence of irrational numbers. The discovery of irrational numbers is said to have been shocking to the Pythagoreans, and Hippasus is supposed to have drowned at sea, apparently as a punishment from the gods for divulging this and crediting it to himself instead of Pythagoras which was the norm in Pythagorean society. However, the few ancient sources who describe this story either do not mention Hippasus by name (e.g. Pappus)[4] or alternatively tell that Hippasus drowned because he revealed how to construct a dodecahedron inside a sphere.[5] The discovery of irrationality is not specifically ascribed to Hippasus by any ancient writer.
- ^ Huffman, Carl A. (1993). Philolaus of Croton: Pythagorean and Presocratic. Cambridge University Press. p. 8.
- ^ "Hippasus of Metapontum | Greek philosopher". Encyclopedia Britannica. Retrieved 2021-09-20.
- ^ Iamblichus (1918). The life of Pythagoras (1918 translation ed.). p. 327.
- ^ William Thompson (1930). The Commentary of Pappus on Book X of Euclid's Elements (PDF). Harvard University Press. p. 64.
- ^ Couprie, Dirk L. (2011). "The dodecahedron, or the shape of the earth according to Plato". Heaven and Earth in Ancient Greek Cosmology: From Thales to Heraclides Ponticus. Astrophysics and Space Science Library. Springer. pp. 201–212. doi:10.1007/978-1-4419-8116-5_17. ISBN 9781441981165.
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