Eudoxus (Eudoksos)( Greek writer, mathematician, astronomer, physician and philosopher)
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Biography Eudoxus (Eudoksos)
Eudoxus; Eudoksos, from Cnidus, ca. 391 - OK. 338 years. BC. e., Greek writer, mathematician, astronomer, physician and philosopher. He studied mathematics at the architectural, medicine is Filistona, and with 23 years of his life was a pupil of Plato. He lived in Egypt at the court of Pharaoh Nektanebus. One and a half years living among the priests, creating their calendar astronomical work eight-year cycle (Oktaeteris). After staying at Cyzicus in the court Maussollos in Caria, ca. 368 g., founded his own school in Athens. He has lectured on theology, cosmology and meteorology. He wrote numerous works relating to different fields of knowledge. E. recognized as one of the greatest mathematicians of antiquity. The most prominent presented its achievements in geometry, especially the establishment of the general theory of proportions, reproduced by Euclid in his Elements. Of great importance was the attempt of mathematical explanation of planetary motion with the system "homocentricity" spheres, subsequently developed by Aristotle.
From the astronomical works of E. we know by name Mirror (Enormon) and Phenomena (Phainomena; verbatim.: "what is the gaze" that is, a description of heaven) in 2 books that Arat shifted in hexameter in his narrative poem of the same name. In the field of geography E. written description of the Earth (Periodos ges) in 7 books, which gave a description of all the then known land, moving from India to the west. The description, he submitted a map. The hypothesis of a spherical structure of the Earth and presumably argued that sailing west from Europe to arrive in the end to India. It relied on the information of Herodotus, Ctesias, Filista, Xanthus (cm. Ionian logographs), on oral histories and personal observations. His work was used by Aristotle, Dikearh, Timaeus, Agatharchides; knew him Eratosthenes, Polybius and Strabo.