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Topic: Theon of Alexandria

	Encyclopedia: Library of Alexandria (Site not responding. Last check: 2007-11-06)
		Alexandrias state-of-the-art library, designed by Christoph Kapellar, was inaugurated in 2001 The Bibliotheca Alexandrina is a major library and cultural center located on the shore of the Egyptian city of Alexandria.
		The Patriarch of Alexandria is the bishop of Alexandria, Egypt.
		There is a growing consensus among historians that the Library of Alexandria likely suffered from several destructive events, but that the destruction of Alexandria's pagan temples in the late 4th century was probably the most severe and final one.
	www.nationmaster.com /encyclopedia/Library-of-Alexandria (7230 words)

	Theon (Site not responding. Last check: 2007-11-06)
		Theon was the father of Hypatia and it certainly seems to be the case that he died before she was murdered in 415.
		Theon's version of Euclid's Elements (with textual changes and some additions) is thought to have been written with the assistance of his daughter Hypatia and was the only Greek text of the Elements known, until an earlier one was discovered in the Vatican in the late 19
		Theon also tried to standardise the way that Euclid writes, so when Theon came across an expression which was somewhat different from the norm, he replaced it by the standard form of expression.
	www-groups.dcs.st-and.ac.uk /~history/Mathematicians/Theon.html (1082 words)

	Theon of Alexandria - Wikipedia, the free encyclopedia
		405 AD) was a scholar and the last director of the Library of Alexandria in the Museion, until it was closed by the patriarch Theophilus on order of the emperor Theodosius in 391 AD.
		Theon's most durable achievement may be his edition of Euclid's Elements, published around 364 and authoritative into the 19th century.
		The bulk of Theon's work, however, consisted of commentaries on important works by his hellenistic predecessors.
	en.wikipedia.org /wiki/Theon_of_Alexandria (158 words)

	Theon of Alexandria -- Facts, Info, and Encyclopedia article (Site not responding. Last check: 2007-11-06)
		Theon was the father of the mathematician and "pagan" martyr (Greek philosopher and astronomer; she invented the astrolabe (370-415)) Hypatia.
		Theon's most durable achievement may be his edition of (Greek geometer (3rd century BC)) Euclid's (Violent or severe weather (viewed as caused by the action of the four elements)) Elements, published around (Click link for more info and facts about 364) 364 and authoritative into the 19th century.
		Apparently he is the first author on the theory of "trepidation of the equinoxes", as an alternative to (The act of preceding in time or order or rank (as in a ceremony)) precession.
	www.absoluteastronomy.com /encyclopedia/t/th/theon_of_alexandria.htm (155 words)

	Hypatia of Alexandria
		She was the daughter of Theon, who was considered one of the most educated men in Alexandria.
		Theon was a well known scholar and professor of mathematics at the University of Alexandria, at a time when mathematics and sciences were considered heresy by the Christians.
		Because Theon raised Hypatia in a world of education, he influenced Hypatia's enthusiasm for mathematics and sciences (astronomy and astrology) as she grew older.
	www.hypatia-phd.com /hypatia.html (478 words)

	Theon of Alexandria History Summary (Site not responding. Last check: 2007-11-06)
		Theon's life can be dated by a number of occurrences, including the solar eclipse he witnessed on June 16, 364, as well as a lunar eclipse on November 25 of that year.
		The latter ceased to exist during Theon's time or shortly thereafter, but it appears he was spared the pain of seeing his daughter Hypatia (370-415) killed by a fanatical mob reacting to her "pagan" teachings.
		In this regard Theon's work—though his interpretation of Euclid revealed him to be far from the equal of the earlier mathematician—proved crucial to the development of mathematics: because of the massive destruction that attended the fall of the Western Roman Empire, his remained the earliest known version of the Elements during the Middle Ages.
	www.bookrags.com /history/sciencehistory/theon-of-alexandria-scit-01123 (519 words)

	Philosophers : Hypatia daugter of Theon (Site not responding. Last check: 2007-11-06)
		Hypatia was the daughter of Theon, a teacher who was one of the most educated men in Alexandria, Egypt.
		Hypatia was raised in an environment of thought by Theon who was himself a well known scholar and a professor of mathematics at the University of Alexandria.
		Theon and Hypatia formed a strong bond as he taught Hypatia his own knowledge passion for answers to the unknown.
	www.trincoll.edu /depts/phil/philo/phils/hypatia.html (308 words)

	Theon Sensors
		THEON Sensors was incorporated in 1997 in Athens and is located in privately-owned facilities (1200 m²) at Koropi, near the new Athens International Airport, with enough space to accommodate further growth.
		Theon's 4X and 6X magnification night vision weapon sights for a variety of individual and crew served weapons are low-weight, small-dimension and offer excellent bore-sighting retention and performance under all light conditions.
		THEON Sensors products are designed and manufactured with the highest levels of workmanship and materials in order to meet the demanding requirements and conditions of their use.
	www.theon.com /en/profile_en.htm (573 words)

	Hypatia of Alexandria (Site not responding. Last check: 2007-11-06)
		Hypatia was the daughter of the mathematician and philosopher Theon of Alexandria and it is fairly certain that she studied mathematics under the guidance of her father.
		However, among the students who she taught in Alexandria there were many prominent Christians, One of the most famous is Synesius of Cyrene, who was later to become the Bishop of Ptolemais.
		However, the Roman prefect of Alexandria was Prestes, and Cyril and Orestes became bitter rivals as church and state fought for control.
	www.edu.pe.ca /rural/grassroots/grassroots_2004/math521A3/Hypatia_of_Alexandria.htm (493 words)

	ABC Radio National - Ockham's Razor Transcript - 3 Aug 97
		Her father was Theon of Alexandria, also a mathematician, best remembered today as the source of our text of Euclid's Elements, but also a major commentator of the work of Ptolemy, the astronomer whose account of the solar system reigned supreme until supplanted by Copernicus in relatively recent times.
		Theon himself was his daughter's teacher, and later the two collaborated on an astronomical table.
		Alexandria in particular was seething with intercommunal rivalry and sectarian bitterness.
	www.abc.net.au /rn/science/ockham/or030897.htm (2292 words)

	PAPPUS OF ALEXANDRIA - LoveToKnow Article on PAPPUS OF ALEXANDRIA
		Suidas states that he was of the same age as Theon of Alexandria, who wrote commentaries on Ptolemys great work, the Syntaxis mathematica, and flourished in the reign of Theodosius I. Suidas says also that Pappus wrote a commentary upon the same work of Ptolemy.
		It is more probable that Pappuss commentary was written long before Theons, but was largely assimilated by the latter, and that Suidas, through failure to disconnect the two commentaries, assigned a like date to both.
		A different date is given by the marginal notes to a 10th-century MS., where it is stated, in connection with the reign of Diocletian (A.D. 284305), that Pappus wrote during that period; and in the absence of any other testimony it seems best to accept the date indicated by the scholiast.
	www.1911encyclopedia.org /P/PA/PAPPUS_OF_ALEXANDRIA.htm (1458 words)

	Dictionary of Greek and Roman Biography and Mythology, page 1080 (v. 3) (Site not responding. Last check: 2007-11-06)
		The passage of Damascius, quoted by Photius, is to the effect that Theon was naturally somewhat obtuse, but so fond of learning and so laborious was he.
		THEON of Samos, is mentioned by Quintilian (xii.
		The peculiar merit of Theon was his prolific fancy (concipiendis visionibus, quas (f>avTaaias vacant], a characteristic denoting that excessive refinement in which the decline of art was already commencing, and which is still more strongly exhibited in the description given
	ancientlibrary.com /smith-bio/3414.html (918 words)

	Theon_of_Smyrna
		Theon of Alexandria and 'Theon the mathematician' by
		The style of his bust, dedicated by his son 'Theon the priest', gives us the date of his death to within 10 years and it is placed within the period 130-140 (hence our midpoint guess of 135).
		Theon also wrote commentaries on the main authorities of mathematics and astronomy.
	www.educ.fc.ul.pt /icm/icm2003/icm14/Theon_of_Smyrna.htm (574 words)

	Hypatia
		Theon himself was a well known scholar and a professor of mathematics at the University of Alexandria.
		Theon and Hypatia formed a strong bond as he taught Hypatia his own knowledge and shared his passion in the search for answers to the unknown.
		In her education, Theon instructed Hypatia on the different religions of the world and taught her how to influence people with the power of words.
	www.agnesscott.edu /lriddle/women/hypatia.htm (710 words)

	Select Epigrams from the Greek Anthology
		PALLADAS of Alexandria is the author of one hundred and fifty-one epigrams (besides twenty-three more doubtful) in the Anthology.
		One of the epigrams attributed to him on the authority of Planudes is an eulogy on the celebrated Hypatia, daughter of Theon of Alexandria, whose tragic death took place A.D. 415 in the reign of Theodosius the Second.
		Another was, according to a scholium in the Palatine MS., written in the reign of Valentinian and Valens, joint-emperors, 364-375 A.D. The epigram on the destruction of Berytus, ix.
	manybooks.net /pages/mackailetext008efgm10/230.html (326 words)

	Euclid's Geometry: Greek Vatican Manuscript 190 (Site not responding. Last check: 2007-11-06)
		Theon of Alexandria lived in Euclid's native city in the 4th Century A.D. He was a scholar who wrote a commentary on a book of astronomy as well as a commentary on Euclid.
		Studying Euclid's theorem, Theon found it a bit lacking and simply wrote in what he thought was needed to complete the idea.
		From that time on copyists included Theon's addition as though it were written by Euclid himself as part of the text.
	mathforum.org /geometry/wwweuclid/vatms.htm (363 words)

	SJSU Virtual Museum (Site not responding. Last check: 2007-11-06)
		She was appointed to expound the doctrines of Plato and Aristotle and was a noted lecturer on the subjects of mathematics, astronomy, philosophy, and mechanics.
		Later in her career she worked with Theon and coauthored a work on Euclid's geometry which is titled Elements.
		In addition to her mathematical works, Hypatia also developed an apparatus for distilling water, an instrument for measuring the level of water, a plane astrolabe (for measuring the positions of the stars, planets, and sun) and a graduated brass hydrometer for determining the specific gravity of a liquid.
	www2.sjsu.edu /depts/Museum/hyp.html (261 words)

	Theon Senior (crater) - Encyclopedia Glossary Meaning Explanation Theon Senior (crater) (Site not responding. Last check: 2007-11-06)
		Theon Senior is a lunar impact crater that is located to the northwest of Delambre crater, and south of D'Arrest crater.
		It forms a matching pair with the Theon Junior crater, about 2 crater diameters to the south-southeast.
		This crater is circular and bowl-shaped, with only a small floor at the center of the sloping interior walls.
	www.encyclopedia-glossary.com /en/Theon-Senior-crater.html (191 words)

	Hypatia (Site not responding. Last check: 2007-11-06)
		Hypatia was the daughter of the mathematician and philosopher Theon of Alexandria and it is fairly certain that she studied mathematics under the guidance and instruction of her father.
		However the Roman prefect of Alexandria was Orestes and Cyril and Orestes became bitter political rivals as church and state fought for control.
		Hypatia was a friend of Orestes and this, together with prejudice against her philosophical views which were seen by Christians to be pagan, led to Hypatia becoming the focal point of riots between Christians and non-Christians.
	www-history.mcs.st-and.ac.uk /history/Mathematicians/Hypatia.html (754 words)

	Hypatia
		Hypatia's father, Theon of Alexandria, was a teacher of mathematics with the Museum of Alexandria in Egypt.
		They dragged her from her chariot and, according to accounts from that time, stripped her, killed her, stripped her flesh from her bones, scattered her body parts through the streets, and burned some remaining parts of her body in the library of Caesareum.
		When the library of Alexandria was burned by the Arab conquerors, used as fuel for baths, the works of Hypatia were destroyed.
	photofoxygirl.tripod.com /hypatiasociety/id33.html (434 words)

	Hypatia of Alexandria
		Hypatia of Alexandria was the first woman to become famous for her studies in mathematics, philosophy, and science.
		Hypatia was born in Alexandria, Egypt in about A.D. At the time, Alexandria was an important place of learning.
		In Alexandria the leaders of the Christian religion did not approve of all that Hypatia taught.
	www.harcourtschool.com /activity/biographies_science/hypatia (409 words)

	Hypatia (Site not responding. Last check: 2007-11-06)
		She was the daughter of the mathematician and philosopher Theon of Alexandria, who -- as only a Greek father would ever think of doing at that time -- saw to it that his daughter received the best possible education in the Greek philosophical schools of Alexandria and Athens.
		It should be mentioned at this point that the fanatical "Christians" of Alexandria had already rioted and had committed mayhem in the streets of the city before.
		Because of this she remained a virgin, preferring to wear the trivona, that is, the philosopher's, as opposed to the wedding, gown.
	www.grecoreport.com /hypatia.htm (1114 words)

	Hypatia -- Encyclopædia Britannica
		The daughter of Theon, also a notable mathematician and philosopher, Hypatia became the recognized head of the Neoplatonist school of philosophy at Alexandria in about 400, and her eloquence, modesty, and beauty, combined with her remarkable intellectual…
		All were active in Alexandria as professors of mathematics and astronomy, and they produced extensive commentaries on the major authorities—Pappus and Theon on Ptolemy, Hypatia on Diophantus and Apollonius.
		Alexandria played a major part in the intrigues that led to the establishment of imperial Rome.
	www.britannica.com /eb/article-9041785 (471 words)

	Theon Of Alexandria Resources (Site not responding. Last check: 2007-11-06)
		Alexandria is a GNOME application to help you manage your book collection.
		Alexandria is also part of the official Gentoo portage tree.
		Alexandria was intended to supersede Naucratis as a Greek centre in Egypt,...
	www.linksatoz.com /alexandria/theon-of-alexandria.html (342 words)

	Pappus (Site not responding. Last check: 2007-11-06)
		Pappus of Alexandria is the last of the great Greek geometers and one of his theorems is cited as the basis of modern
		Pappus, of Alexandria, philosopher, lived about the time of the Emperor Theodosius the Elder [379 AD - 395 AD], when Theon the Philosopher, who wrote the Canon of Ptolemy, also flourished.
		This would seem convincing but there is a chronological table by Theon of Alexandria which, when being copied, has had inserted next to the name of Diocletian (who ruled 284 AD - 305 AD) "at that time wrote Pappus".
	www-history.mcs.st-andrews.ac.uk /history/Mathematicians/Pappus.html (2100 words)

	DIOPHANTUS - LoveToKnow Article on DIOPHANTUS
		A.D. oo), nor by Theon of Smyrna (c.
		A.D. 130), nor does Greek arithmetic as represented by these authors and by lamblichus (end of 3rd century) show any trace of his influence, facts which can only be accounted for by his being later than those arithmeticians at least who would have been capable of understanding him fully.
		On the other hand he is quoted by Theon of Alexandria (who observed an eclipse at Alexandria in AD.
	www.1911encyclopedia.org /D/DI/DIOPHANTUS.htm (1126 words)

	Hypatia Theon's Philosophical Investigations: Reductio ad absurdum
		Hypatia daughter of Theon was respected by the whole city of Alexandria for her wisdom in spiritual matters as well has her deep knowledge of mathematics and astronomy, having made contributions to the analysis of conic sections and construction of the astrolabe for measuring the position of stars and planets.
		After a few hundred years in soulful communion with her beloved "One," Hypatia Theon found herself drawn once again into human form, this time in the world of Amia, where she eventually showed up as so many adventurers have before her on the docks of Cordor, City of infinite dreams.
		Because of her spiritual karma, Hypatia Theon, of course, has a monk's wisdom as well as a cleric's healing hand.
	hypatiatheon.blogspot.com /2005/06/reductio-ad-absurdum.html (329 words)

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