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Hypatia
Hypatia (born 350–370 – March 415 AD) was a Neoplatonist philosopher, astronomer, and mathematician who lived in Alexandria, Egypt (Roman province), Egypt: at that time a major city of the Eastern Roman Empire. In Alexandria, Hypatia was a prominent thinker who taught subjects including philosophy and astronomy, and in her lifetime was renowned as a great teacher and a wise counselor. Not the only fourth century Alexandrian female mathematician, Hypatia was preceded by Pandrosion. However, Hypatia is the first female mathematician whose life is reasonably well recorded. She wrote a commentary on Diophantus's thirteen-volume ''Arithmetica'', which may survive in part, having been interpolated into Diophantus's original text, and another commentary on Apollonius of Perga's treatise on conic sections, which has not survived. Many modern scholars also believe that Hypatia may have edited the surviving text of Ptolemy's ''Almagest'', based on the title of her father Theon of A ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cyril Of Alexandria
Cyril of Alexandria (; or ⲡⲓ̀ⲁⲅⲓⲟⲥ Ⲕⲓⲣⲓⲗⲗⲟⲥ; 376–444) was the Patriarch of Alexandria from 412 to 444. He was enthroned when the city was at the height of its influence and power within the Roman Empire. Cyril wrote extensively and was a major player in the Christological controversies of the late-4th and 5th centuries. He was a central figure in the Council of Ephesus in 431, which led to the deposition of Nestorius as Patriarch of Constantinople. Cyril is counted among the Church Fathers and also as a Doctor of the Church, and his reputation within the Christian world has resulted in his titles ''Pillar of Faith'' and ''Seal of all the Fathers''. The Nestorian bishops at their synod at the Council of Ephesus declared him a heretic, labelling him as a "monster, born and educated for the destruction of the church". Cyril is well known for his dispute with Nestorius and his supporter, Patriarch John of Antioch, whom Cyril exclude ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Theon Of Alexandria
Theon of Alexandria (; ; ) was a Greek scholar and mathematician who lived in Alexandria, Egypt. He edited and arranged Euclid's '' Elements'' and wrote commentaries on works by Euclid and Ptolemy. His daughter Hypatia also won fame as a mathematician. Life Little is known about the life of Theon. He made predictions and observations of solar and lunar eclipses in 364 which show he was active at that time, and he is said to have lived during the reign of Theodosius I (379–395). The ''Suda'', a tenth-century Byzantine encyclopedia, calls Theon a "man of the Mouseion". However, both the Library of Alexandria and the original Mouseion were destroyed in the first century BC and according to classical historian Edward J. Watts, Theon was probably the head of a school called the "Mouseion", which was named in emulation of the Hellenistic Mouseion that had once included the Library of Alexandria, but which had little other connection to it.Edward Jay Watts, (2008), ''City and Sch ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Orestes (prefect)
Orestes (fl. 415 AD) was a Roman state official serving as governor of the diocese of Egypt (the Augustal prefect) in 415. During his term of office, he was engaged a violent feud with the bishop of Alexandria, Cyril, and their struggle precipitated the death of the philosopher and scientist Hypatia. Biography In 415, during his office, he clashed with the young bishop of Alexandria, Cyril, who had been appointed shortly before Orestes to succeed to the Patriarchate of Alexandria after the death of Theophilus, Cyril's own uncle. On one occasion, Cyril sent the ''grammaticus'' Hierax to discover the content of an edict that Orestes was to promulgate on the mimes shows, which attracted great crowds. When some Jews, with whom Cyril had clashed before, discovered the presence of Hierax, they rioted. Then Orestes had Hierax tortured in public in a theatre. This order had two aims: the first was to quell the riot, the other to mark Orestes' authority on Cyril. According to Christian ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Synesius
Synesius of Cyrene (; ; c. 373 – c. 414) was a Greek bishop of Ptolemais in ancient Libya, a part of the Western Pentapolis of Cyrenaica after 410. He was born of wealthy parents at Balagrae (now Bayda, Libya) near Cyrene between 370 and 375. Life While still a youth (in 393), he went with his brother Euoptius to Alexandria, where he became an enthusiastic Neoplatonist and disciple of Hypatia. Between 395 and 399, he spent some time in Athens. In 398 he was chosen as an envoy to the imperial court in Constantinople by Cyrene and the whole Pentapolis. He went to the capital on the occasion of the delivery of the ''aurum coronarium'' and his task was to obtain tax remissions for his country. In Constantinople he obtained the patronage of the powerful praetorian prefect Aurelianus. Synesius composed and addressed to Emperor Arcadius a speech entitled ''De regno'', full of topical advice as to the studies of a wise ruler, but also containing a bold statement that the emper ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pandrosion
Pandrosion of Alexandria () was a mathematician in fourth-century-AD Alexandria, discussed in the ''Mathematical Collection'' of Pappus of Alexandria and known for having possibly developed an approximate method for doubling the cube. She is likely the earliest known female mathematician. Contributions Pappus dedicated a section of his ''Collection'' to correcting what he perceives as errors in Pandrosion's students. Although Pappus does not directly state that the method is Pandrosion's, he includes in this section a method for calculating numerically accurate but approximate solutions to the problem of doubling the cube, or more generally of calculating cube roots. It is a "recursive geometric" solution, but three-dimensional rather than working within the plane. Pappus criticized this work as lacking a proper mathematical proof. Another method included in the same section, and potentially attributable in the same way indirectly to Pandrosion, is a correct and exact method for co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Astrolabe
An astrolabe (; ; ) is an astronomy, astronomical list of astronomical instruments, instrument dating to ancient times. It serves as a star chart and Model#Physical model, physical model of the visible celestial sphere, half-dome of the sky. Its various functions also make it an elaborate inclinometer and an analog computer, analog calculation device capable of working out several kinds of problems in astronomy. In its simplest form it is a metal disc with a pattern of wires, cutouts, and perforations that allows a user to calculate astronomical positions precisely. It is able to measure the horizontal coordinate system, altitude above the horizon of a celestial body, day or night; it can be used to identify stars or planets, to determine local latitude given local time (and vice versa), to survey, or to triangulation, triangulate. It was used in classical antiquity, the Islamic Golden Age, the European Middle Ages and the Age of Discovery for all these purposes. The astrolabe, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Female Mathematician
This is a list of women who have made noteworthy contributions to or achievements in mathematics. These include mathematical research, mathematics education, the history and philosophy of mathematics, public outreach, and mathematics contests. A * Karen Aardal (born 1961), Norwegian and Dutch applied mathematician, theoretical computer scientist, and operations researcher * Hanan Mohamed Abdelrahman, Egyptian and Norwegian mathematics educator * Izabela Abramowicz (1889–1973), Polish mathematician and mathematics educator * Louise Doris Adams (1889–1965), British mathematics reformer, president of the Mathematical Association * Rachel Blodgett Adams (1894–1982), American mathematician, one of the earliest mathematics doctorates from Radcliffe College * Tatyana Afanasyeva (1876–1964), Russian-Dutch researcher in statistical mechanics, randomness, and geometry education * Amandine Aftalion (born 1973), French applied mathematician, studies superfluids and the mathem ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydrometer
A hydrometer or lactometer is an instrument used for measuring density or relative density of liquids based on the concept of buoyancy. They are typically Calibration, calibrated and Graduation (instrument), graduated with one or more scales such as specific gravity. A hydrometer usually consists of a sealed hollow glass tube with a wider bottom portion for buoyancy, a ballast such as lead or Mercury (element), mercury for stability, and a narrow stem with graduations for measuring. The liquid to test is poured into a tall container, often a graduated cylinder, and the hydrometer is gently lowered into the liquid until it floats freely. The point at which the surface of the liquid touches the stem of the hydrometer correlates to relative density. Hydrometers can contain any number of scales along the stem corresponding to properties correlating to the density. Hydrometers are calibrated for different uses, such as a lactometer for measuring the density (creaminess) of milk, a sa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Neoplatonism
Neoplatonism is a version of Platonic philosophy that emerged in the 3rd century AD against the background of Hellenistic philosophy and religion. The term does not encapsulate a set of ideas as much as a series of thinkers. Among the common ideas it maintains is monism, the doctrine that all of reality can be derived from a single principle, "the One". Neoplatonism began with Ammonius Saccas and his student Plotinus (c. 204/5 – 271 AD) and stretched to the sixth century. After Plotinus there were three distinct periods in the history of neoplatonism: the work of his student Porphyry (third to early fourth century); that of Iamblichus (third to fourth century); and the period in the fifth and sixth centuries, when the academies in Alexandria and Athens flourished. Neoplatonism had an enduring influence on the subsequent history of Western philosophy and religion. In the Middle Ages, Neoplatonic ideas were studied and discussed by Christian, Jewish, and Muslim thinkers. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mathematician
A mathematician is someone who uses an extensive knowledge of mathematics in their work, typically to solve mathematical problems. Mathematicians are concerned with numbers, data, quantity, mathematical structure, structure, space, Mathematical model, models, and mathematics#Calculus and analysis, change. History One of the earliest known mathematicians was Thales of Miletus (); he has been hailed as the first true mathematician and the first known individual to whom a mathematical discovery has been attributed. He is credited with the first use of deductive reasoning applied to geometry, by deriving four corollaries to Thales's theorem. The number of known mathematicians grew when Pythagoras of Samos () established the Pythagorean school, whose doctrine it was that mathematics ruled the universe and whose motto was "All is number". It was the Pythagoreans who coined the term "mathematics", and with whom the study of mathematics for its own sake begins. The first woman math ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ancient Philosophy
This page lists some links to ancient philosophy, namely philosophical thought extending as far as early post-classical history (). Overview Genuine philosophical thought, depending upon original individual insights, arose in many cultures roughly contemporaneously. Karl Jaspers termed the intense period of philosophical development beginning around the 7th century BCE and concluding around the 3rd century BCE an Axial Age in human thought. In Western philosophy, the spread of Christianity in the Roman Empire marked the ending of Hellenistic philosophy and ushered in the beginnings of medieval philosophy, whereas in the Middle East, the spread of Islam through the Caliphate, Arab Empire marked the end of #Ancient Iranian philosophy, Old Iranian philosophy and ushered in the beginnings of early Islamic philosophy. Ancient Greek and Roman philosophy Philosophers Pre-Socratic philosophers * Milesian School :Thales (624 – c 546 BCE) :Anaximander (610 – 546 BCE) :Anaximen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
