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Εμφανίζονται 10 τίτλοι με αναζήτηση: Βιογραφίες για το τοπωνύμιο: "ΣΟΥΝΙΟ Ακρωτήρι ΑΤΤΙΚΗ".


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Θεαίτητος

, , 417 - 369

An Athenian, the son of Euphronius of Sunium, introduced as one of the speakers in Plato's Theaetetus and Sophistes, in which he is spoken of as a noble youth, ardent in the pursuit of knowledge, and especially in the study of geometry.


Theaetetus. An Athenian, the son of Euphronius of Sunium, is introduced as one of the speakers in Plato's Theaeteius and Sophistes, in which dialogues he is spoken of as a noble, courageous, and well-disposed youth; in person somewhat like Socrates ; and ardent in the pursuit of knowledge, especially in tile study of geometry (Plat. Theaet.; Sophist. passim; Polit.). Diogenes Laertius (ii. 29) mentions him as an example of the happy effects of the teaching of Socrates. Eusebius (Chron.) places "Theaetetus the mathematician" at Ol. 85, B. C. 440, a date which can only be accepted as referring, not to the time when he really flourished, but when, as a mere youth, he became the disciple of Socrates.


  Theaitetos (c. 417-369 BC): Studied with Theodoros of Cyrene and at the Academy with Plato.
  Father died before he reached manhood and left a large fortune but the trustees of the estate squandered it. At some time taught in Herakleia in Pontus; may have taught Herakleides. Died from disease contracted after wounding in battle (prob. v. Korinth 369)
  Contributed to the theory of irrational quantities, construction of regular solids, and theory of proportions, built upon by Eudoxos and set out by Euclid bk 5.
  Eponym of one Platonic dialogue and principal character of Sophist.

This text is cited Sept 2003 from the Greek & Roman Science & Technology URL below.


In the fourth century, Athens became a great centre for mathematical study, and the scholars Anaxagoras (B.C. 500-428), Hippocrates of Chios, Eudoxus, Plato, and Theaetetus are among its greatest names.


  The construction of the five regular solids is attributed to the Pythagoreans. Some of them, the cube, the tetrahedron (which is nothing but a pyramid), and the octahedron (which is only a double pyramid with a square base), cannot but have been known to the Egyptians. And it appears that dodecahedra have been found, of bronze or other material, which may belong to periods earlier than Pythagoras' time by some centuries.
  It is true that the author of the scholium No. I to Eucl. XIII. says that the Book is about "the five so-called Platonic figures, which however do not belong to Plato, three of the aforesaid five figures being due to the Pythagoreans, namely the cube, the pyramid and the dodecahedron, while the octahedron and the icosahedron are due to Theaetetus." This statement (taken probably from Geminus) may perhaps rest on the fact that Theaetetus was the first to write at any length about the two last-mentioned solids. We are told indeed by Suidas (S. V. Theaitetos) that Theaetetus "first wrote on the ?five solids? as they are called." This no doubt means that Theaetetus was the first to write a complete and systematic treatise on all the regular solids; it does not exclude the possibility that Hippasus or others had already written on the dodecahedron. The fact that Theaetetus wrote upon the regular solids agrees very well with the evidence which we possess of his contributions to the theory of irrationals, the connexion between which and the investigation of the regular solids is seen in Euclid's Book XIII.


Theaetetus By Plato (e-texts)


Theaetetus: Various WebPages


Demetrius of Sunium

Demetrius of Sunium. Cynic philosopher, who flourished at Corinth in the first century. During the reign of Caligula he taught philosophy at Rome, where he obtained the highest reputation for wisdom and virtue. He was banished from Rome in the time of Nero for his free censure of public manners. After the death of this emperor he returned to Rome, but the boldness of his language soon offended Vespasian and again subjected him to the punishment of exile. Apollonius, with whom he had formed a friendship, prevailed on Titus to recall him; but under Domitian he withdrew to Puteoli. Seneca, who was acquainted with him, speaks in the highest terms of his masculine eloquence, sound judgment, intrepid fortitude, and inflexible integrity.

This text is cited Oct 2002 from The Perseus Project URL below, which contains interesting hyperlinks


Demetrius of Sunium, a Cynic philosopher, was educated in the school of the sophist Rhodius, and was an intimate friend of the physician Antiphilus. He is said to have travelled up the Nile for the purpose of seeing the pyramids and the statue of Memnon (Lucian, Toxar. 27, adv. Indoct. 19). He appears, however, to have spent some part of his life at Corinth, where he acquired great celebrity as a teacher of the Cynic philosophy, and was a strong opponent of Apollonius of Tyana (Philostr. Vit. Apoll. iv. 25). His life falls in the reigns of Caligula, Claudius, Nero, Vespasian, and Domitian. He was a frank and open-hearted man, who did not scruple to censure even the most powerful when he thought that they deserved it. In consequence of this, he was sent into exile, but he preserved the same noble freedom and independence, notwithstanding his poverty and sufferings; and on one occasion, when the emperor Vespasian during a journey met him, Demetrius did not shew the slightest symptom of respect. Vespasian was indulgent enough to take no other vengeance except by calling him a dog. (Senec. de Benef. vii. 1, 8; Suet. Vespas. 13; Dion Cass. lxvi. 13; Tacit. Ann. xvi. 34, Hist. iv. 40; Lucian, de Saltat. 63.)

This text is from: A dictionary of Greek and Roman biography and mythology, 1873 (ed. William Smith). Cited Aug 2005 from The Perseus Project URL below, which contains interesting hyperlinks


Theaetetus

Theaetetus. An Athenian, the son of Euphronius of Sunium, is introduced as one of the speakers in Plato's Theaeteius and Sophistes, in which dialogues he is spoken of as a noble, courageous, and well-disposed youth; in person somewhat like Socrates ; and ardent in the pursuit of knowledge, especially in tile study of geometry. (Plat. Theaet.). Diogenes Laertius (ii. 29) mentions him as an example of the happy effects of the teaching of Socrates. Eusebius (Chron.) places "Theaetetus the mathematician" at Ol. 85, B. C. 440, a date which can only be accepted as referring, not to the time when he really flourished, but when, as a mere youth, he became the disciple of Socrates.

This text is from: A dictionary of Greek and Roman biography and mythology, 1873 (ed. William Smith). Cited July 2005 from The Perseus Project URL below, which contains interesting hyperlinks


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