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• Theaetetus_(mathematician) abstract "Theaetetus of Athens (/ˌθiːaɪˈtiːtəs/ or /ˌθiːɪˈtiːtəs/; Greek: Θεαίτητος; c. 417 BC – 369 BC), possibly son of Euphronius, of the Athenian deme Sunium, was a classical Greek mathematician. His principal contributions were on irrational lengths, which was included in Book X of Euclid's Elements, and proving that there are precisely five regular convex polyhedra. A friend of Socrates and Plato, he is the central character in Plato's eponymous Socratic dialogue.Theaetetus, like Plato, was a student of the Greek mathematician Theodorus of Cyrene. Cyrene was a prosperous Greek colony on the coast of North Africa, in what is now Libya, on the eastern end of the Gulf of Sidra. Theodorus had explored the theory of incommensurable quantities, and Theaetetus continued those studies with great enthusiasm; specifically, he classified various forms of irrational numbers according to the way they are expressed as square roots. This theory is presented in great detail in Book X of Euclid's Elements.Theaetetus was one of the few Greek mathematicians who was actually a native of Athens. Most Greek mathematicians of antiquity came from the numerous Greek cities scattered around the Ionian coast, the Black Sea and the whole Mediterranean basin.He evidently resembled Socrates in the snubness of his nose and bulging of his eyes. This and most of what we know of him comes from Plato, who named a dialogue after him, the Theaetetus. He apparently died from wounds and dysentery on his way home after fighting in an Athenian battle at Corinth, now presumed to have occurred in 369 BC; some scholars argue alternately for 391 BC as his date of death, the date of an earlier battle at Corinth.The crater Theaetetus on the Moon is named after him.".
• Theaetetus_(mathematician) birthDate "-0417".
• Theaetetus_(mathematician) birthYear "-0417".
• Theaetetus_(mathematician) viafId "74657292".
• Theaetetus_(mathematician) wikiPageExternalLink www.theaetetus.net.
• Theaetetus_(mathematician) wikiPageID "1722064".
• Theaetetus_(mathematician) wikiPageRevisionID "593047313".
• Theaetetus_(mathematician) dateOfBirth "417".
• Theaetetus_(mathematician) hasPhotoCollection Theaetetus_(mathematician).
• Theaetetus_(mathematician) id "Theaetetus".
• Theaetetus_(mathematician) name "Theaetetus".
• Theaetetus_(mathematician) shortDescription "Greek mathematician".
• Theaetetus_(mathematician) title "Theaetetus of Athens".
• Theaetetus_(mathematician) description "Greek mathematician".
• Theaetetus_(mathematician) description "Greek mathematician".
• Theaetetus_(mathematician) subject Category:369_BC_deaths.
• Theaetetus_(mathematician) subject Category:417_BC_births.
• Theaetetus_(mathematician) subject Category:4th-century_BC_Greek_people.
• Theaetetus_(mathematician) subject Category:Ancient_Athenians.
• Theaetetus_(mathematician) subject Category:Ancient_Greek_mathematicians.
• Theaetetus_(mathematician) type 4th-centuryBCGreekPeople.
• Theaetetus_(mathematician) type AncientGreekMathematicians.
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• Theaetetus_(mathematician) comment "Theaetetus of Athens (/ˌθiːaɪˈtiːtəs/ or /ˌθiːɪˈtiːtəs/; Greek: Θεαίτητος; c. 417 BC – 369 BC), possibly son of Euphronius, of the Athenian deme Sunium, was a classical Greek mathematician. His principal contributions were on irrational lengths, which was included in Book X of Euclid's Elements, and proving that there are precisely five regular convex polyhedra.".
• Theaetetus_(mathematician) label "Teeteto".
• Theaetetus_(mathematician) label "Teetèto (matematico)".
• Theaetetus_(mathematician) label "Theaetetus (mathematician)".
• Theaetetus_(mathematician) label "Theaitetos".
• Theaetetus_(mathematician) label "Théétète d'Athènes".
• Theaetetus_(mathematician) label "Теэтет Афинский".
• Theaetetus_(mathematician) label "泰阿泰德".
• Theaetetus_(mathematician) sameAs Theaitetos.
• Theaetetus_(mathematician) sameAs Θεαίτητος_(μαθηματικός).
• Theaetetus_(mathematician) sameAs Teeteto.
• Theaetetus_(mathematician) sameAs Théétète_d'Athènes.
• Theaetetus_(mathematician) sameAs Teetèto_(matematico).
• Theaetetus_(mathematician) sameAs m.05r3g8.
• Theaetetus_(mathematician) sameAs Q920912.
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• Theaetetus_(mathematician) sameAs Theaetetus_(mathematician).
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• Theaetetus_(mathematician) isPrimaryTopicOf Theaetetus_(mathematician).
• Theaetetus_(mathematician) name "Theaetetus".