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Chapters: Ptolemy, Diophantus, Caleb Gattegno, Ibn Yunus, Ahmes, Abū Kāmil Shujā Ibn Aslam, Ahmed Ibn Yusuf, Fahmy Ibrahim Mikhail, Ibrahim Fahmy Ibrahim Mikhail. Source: Wikipedia. Pages: 52. Not illustrated. Free updates online. Purchase includes a free trial membership in the publisher's book club where you can select from more than a million books without charge. Excerpt: Claudius Ptolemaeus (Greek: Klaúdios Ptolemaîos; c. AD 90 c. 168), known in English as Ptolemy (pronounced ), was a Roman citizen of Egypt who wrote in Greek. He was a mathematician, astronomer, geographer, astrologer and a poet of a single epigram in the Greek Anthology . He lived in Egypt under Roman rule, and is believed to have been born in the town of Ptolemais Hermiou in the Thebaid. He died in Alexandria around AD 168. Ptolemy was the author of several scientific treatises, at least three of which were of continuing importance to later Islamic and European science. The first is the astronomical treatise now known as the Almagest (in Greek, , "The Great Treatise", originally , "Mathematical Treatise"). The second is the Geography, which is a thorough discussion of the geographic knowledge of the Greco-Roman world. The third is the astrological treatise known sometimes in Greek as the Apotelesmatika (), more commonly in Greek as the Tetrabiblos ( "Four books"), and in Latin as the Quadripartitum (or four books) in which he attempted to adapt horoscopic astrology to the Aristotelian natural philosophy of his day. The name Claudius is a Roman nomen; the fact that Ptolemy bore it proves that he was a Roman citizen. It would have suited custom if the first of Ptolemy's family who became a citizen (whether it was he or an ancestor) took the nomen from a Roman called Claudius, who was in some sense responsible for granting citizenship. If, as was not uncommon, this Roman was the emperor, the citizenship would have been granted between AD 41 and 68 (when C...More: http://booksllc.net/?id=23979 ... Read more

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Purchase includes a free trial membership in the publisher's book club where you can select from more than a million books without charge. Chapters: Arnulf of Carinthia, Harald I of Norway, Emperor Seiwa, Árpád, Umar Ibn Hafsun, Abū Kāmil Shujā Ibn Aslam, Smbat I, Hatto I, Ranulf Ii of Aquitaine, Tuotilo, Berno of Cluny, Ki No Tomonori. Source: Wikipedia. Free updates online. Not illustrated. Excerpt: Emperor Seiwa Seiwa-tenn , 850 ... Read more

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High Quality Content by WIKIPEDIA articles! High Quality Content by WIKIPEDIA articles! Abu Kamil mit kompletten Namen Abu Kamil Shuja ibn Aslam ibn Muhammad ibn Shuja, ein arabischer Mathematiker. Er lebte von ca. 850 bis 930 n. Chr. und stammt wahrscheinlich aus Ägypten, weitere biographische Angaben sind nicht mehr vorhanden. Er wurde al-Hasib al-Misri, der „ägyptische Rechner" genannt. Er hat allgemeine Beziehungen zwischen Wurzelausdrücken gefunden, die unter anderem in folgenden Gleichungen stecken, die von ihm aufgestellt und mithilfe der binomische Formeln bestätigt wurden. ... Read more