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Alchabitius
Abu al-Saqr Abd al-Aziz ibn Uthman ibn Ali al-Qabisi, generally known as Al-Qabisi, (Latinised as Alchabitius or Alcabitius), and sometimes known as ''Alchabiz'', ''Abdelazys'', ''Abdilaziz'' (Arabic:'' 'Abd al-Azîz'', عبدالعزيز القبيصي), (died 967) was a Muslim astrologer, astronomer, and mathematician. Life Originally from Qabisa in Iraq, Alchabitius later went to Aleppo where he worked for and lived in the palace of Sayf al-Dawla. He died in 967. Work Al-Qabisi is best known for his treatise on judicial astrology, ''Introduction to the Art of Judgments of the Stars''. This was dedicated to the Emir of Aleppo, Prince Sayf al-Dawla, and survives in at least twenty-five Arabic manuscripts, and over two hundred manuscripts of its Latin translation, with twelve printed editions of the Latin work between 1473 and 1521. The Arabic text has received at least three Latin translations, which attracted several commentaries and were, in turn, translated into other Euro ...
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Alchabitius – Opus Ad Scrutanda Stellarum Magisteria Isagogicum, 1521 – BEIC 1211700
Abu al-Saqr Abd al-Aziz ibn Uthman ibn Ali al-Qabisi, generally known as Al-Qabisi, (Latinised as Alchabitius or Alcabitius), and sometimes known as ''Alchabiz'', ''Abdelazys'', ''Abdilaziz'' (Arabic:'' 'Abd al-Azîz'', عبدالعزيز القبيصي), (died 967) was a Muslim astrologer, astronomer, and mathematician. Life Originally from Qabisa in Iraq, Alchabitius later went to Aleppo where he worked for and lived in the palace of Sayf al-Dawla. He died in 967. Work Al-Qabisi is best known for his treatise on judicial astrology, ''Introduction to the Art of Judgments of the Stars''. This was dedicated to the Emir of Aleppo, Prince Sayf al-Dawla, and survives in at least twenty-five Arabic manuscripts, and over two hundred manuscripts of its Latin translation, with twelve printed editions of the Latin work between 1473 and 1521. The Arabic text has received at least three Latin translations, which attracted several commentaries and were, in turn, translated into other Euro ...
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Haly Abenragel
Abū l-Ḥasan 'Alī ibn Abī l-Rijāl al-Shaybani ( ar, أبو الحسن علي ابن أبي الرجال) (commonly known as ''Haly'', ''Hali'', ''Albohazen Haly filii Abenragel'' or ''Haly Abenragel'', from ''ibn Rijal'') was an Arab astrologer of the late 10th and early 11th century, best known for his ''Kitāb al-bāri' fī aḥkām an-nujūm''. Life He was a court astrologer to the Tunisian prince al-Mu'izz ibn Bâdis in the first half of the 11th century. Haly died after 1037 in Kairouan in what is now Tunisia. Works His ''Kitāb al-bāri' fī aḥkām an-nujūm'' was translated by Yehudā ben Moshe into Old Castilian for Alfonso X of Castile in 1254 under the title ''El libro conplido en los iudizios de las estrellas'' ("The complete book on the judgment of the stars"). The only surviving manuscript of the Old Castilian translation is MS 3605 at the National Library in Madrid, which however only contains 5 of the 8 books of the complete Old Castilian translation. ...
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John Of Saxony (astronomer)
John of Saxony or Johannes de Saxonia or John Danko or Dancowe of Saxony was a medieval astronomer. Although his exact birthplace is unknown it is believed he was born in Germany, most likely Magdeburg. His scholarly work is believed to date from the end of the 13th century into the mid 14th century. He spent most of his active career, from about 1327 to 1355, at the University of Paris. Scholarship John of Saxony is quoted in various medieval manuscripts and referenced as the author of various astronomical or astrological treatises, even though his authorship in some cases is questionable. A ''computus'' dating back to 1297 is attributed to John of Saxony even though the author is listed as Iohannes Alemanus. The fact that the geographical longitudes of Paris and Magdeburg, considered John's birthplace, among other facts is why some historians consider him the author. Viewed with less suspicion is his commentary on ''Liber Introductorius ad Magisterium Idiciorum Astrorum'' w ...
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Perfect Number
In number theory, a perfect number is a positive integer that is equal to the sum of its positive divisors, excluding the number itself. For instance, 6 has divisors 1, 2 and 3 (excluding itself), and 1 + 2 + 3 = 6, so 6 is a perfect number. The sum of divisors of a number, excluding the number itself, is called its aliquot sum, so a perfect number is one that is equal to its aliquot sum. Equivalently, a perfect number is a number that is half the sum of all of its positive divisors including itself; in symbols, \sigma_1(n)=2n where \sigma_1 is the sum-of-divisors function. For instance, 28 is perfect as 1 + 2 + 4 + 7 + 14 = 28. This definition is ancient, appearing as early as Euclid's ''Elements'' (VII.22) where it is called (''perfect'', ''ideal'', or ''complete number''). Euclid also proved a formation rule (IX.36) whereby q(q+1)/2 is an even perfect number whenever q is a prime of the form 2^p-1 for positive integer p—what is now called a Mersenne prime. Two millen ...
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10th-century Astronomers
1 (one, unit, unity) is a number representing a single or the only entity. 1 is also a numerical digit and represents a single unit of counting or measurement. For example, a line segment of ''unit length'' is a line segment of length 1. In conventions of sign where zero is considered neither positive nor negative, 1 is the first and smallest positive integer. It is also sometimes considered the first of the infinite sequence of natural numbers, followed by  2, although by other definitions 1 is the second natural number, following  0. The fundamental mathematical property of 1 is to be a multiplicative identity, meaning that any number multiplied by 1 equals the same number. Most if not all properties of 1 can be deduced from this. In advanced mathematics, a multiplicative identity is often denoted 1, even if it is not a number. 1 is by convention not considered a prime number; this was not universally accepted until the mid-20th century. Additionally, 1 is the s ...
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967 Deaths
Year 967 ( CMLXVII) was a common year starting on Tuesday (link will display the full calendar) of the Julian calendar. Events By place Europe * Spring – Emperor Otto I (the Great) calls for a council at Rome, to present the new government under Pope John XIII. He asserts his rights in the city, and insists on the occasional presence of an imperial judge, alongside the papal court. The era of Roman independence is over. Grado becomes the patriarchal and metropolitan church of the whole of the Veneto. * Otto I goes on a tour of the Lombard duchies of southern Italy. In Capua he grants Pandulf I (Ironhead) the vacant Duchy of Spoleto and Camerino and charges him with prosecuting the war against the Byzantine Empire. In Benevento, Otto receives the homage of Pandulf's brother and co-ruler Landulf III. In Salerno he receives also the support of Gisulf I. * Otto I dispatches an imperial delegation (led by a Venetian named Domenico) to Constantinople with assuranc ...
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Year Of Birth Missing
A year or annus is the orbital period of a planetary body, for example, the Earth, moving in its orbit around the Sun. Due to the Earth's axial tilt, the course of a year sees the passing of the seasons, marked by change in weather, the hours of daylight, and, consequently, vegetation and soil fertility. In temperate and subpolar regions around the planet, four seasons are generally recognized: spring, summer, autumn and winter. In tropical and subtropical regions, several geographical sectors do not present defined seasons; but in the seasonal tropics, the annual wet and dry seasons are recognized and tracked. A calendar year is an approximation of the number of days of the Earth's orbital period, as counted in a given calendar. The Gregorian calendar, or modern calendar, presents its calendar year to be either a common year of 365 days or a leap year of 366 days, as do the Julian calendars. For the Gregorian calendar, the average length of the calendar year ...
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Encyclopedia
An encyclopedia (American English) or encyclopædia (British English) is a reference work or compendium providing summaries of knowledge either general or special to a particular field or discipline. Encyclopedias are divided into articles or entries that are arranged alphabetically by article name or by thematic categories, or else are hyperlinked and searchable. Encyclopedia entries are longer and more detailed than those in most dictionaries. Generally speaking, encyclopedia articles focus on '' factual information'' concerning the subject named in the article's title; this is unlike dictionary entries, which focus on linguistic information about words, such as their etymology, meaning, pronunciation, use, and grammatical forms.Béjoint, Henri (2000)''Modern Lexicography'', pp. 30–31. Oxford University Press. Encyclopedias have existed for around 2,000 years and have evolved considerably during that time as regards language (written in a major international or a ...
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Dictionary Of Scientific Biography
The ''Dictionary of Scientific Biography'' is a scholarly reference work that was published from 1970 through 1980 by publisher Charles Scribner's Sons, with main editor the science historian Charles Gillispie, from Princeton University. It consisted of sixteen volumes. It is supplemented by the ''New Dictionary of Scientific Biography''. Both these publications are included in a later electronic book, called the ''Complete Dictionary of Scientific Biography''. ''Dictionary of Scientific Biography'' The ''Dictionary of Scientific Biography'' is a scholarly English-language reference work consisting of biographies of scientists from antiquity to modern times, but excluding scientists who were alive when the ''Dictionary'' was first published. It includes scientists who worked in the areas of mathematics, physics, chemistry, biology, and earth sciences. The work is notable for being one of the most substantial reference works in the field of history of science, containing extensiv ...
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Melchior Sessa
Melchior is the name traditionally given to one of the biblical Magi appearing in the Gospel of Matthew. There are many notable people with this name, or close variations. As a first name * Melchior Anderegg (1828–1914), Swiss mountain guide * Melchior Berri (1801–1854), Swiss architect * Melchior Broederlam (c. 1350 – after 1409), Dutch painter * Melchior Cano (1525–1560), Spanish theologian * Melchior Cibinensis, 16th century Hungarian alchemical writer * Melchior Goldast (1576–1635), Swiss writer * Melchior d'Hondecoeter (1636–1695), Dutch animalier * Melchior de Polignac (1661–1742), French diplomat, Roman Catholic cardinal * Melchior de Vogüé (1848–1910), French diplomat, travel writer, archaeologist, philanthropist * Melchior Franck (1579–1639), German composer * Melchior Grodziecki (1584–1619), Catholic saint * Melchior Hoffman (c. 1495–1543), German-Dutch Anabaptist prophet * Melchior Inchofer (c. 1584–1648), Jesuit who took part in Galileo's t ...
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Al-Biruni
Abu Rayhan Muhammad ibn Ahmad al-Biruni (973 – after 1050) commonly known as al-Biruni, was a Khwarazmian Iranian in scholar and polymath during the Islamic Golden Age. He has been called variously the "founder of Indology", "Father of Comparative Religion", "Father of modern geodesy", and the first anthropologist. Al-Biruni was well versed in physics, mathematics, astronomy, and natural sciences, and also distinguished himself as a historian, chronologist, and linguist. He studied almost all the sciences of his day and was rewarded abundantly for his tireless research in many fields of knowledge. Royalty and other powerful elements in society funded Al-Biruni's research and sought him out with specific projects in mind. Influential in his own right, Al-Biruni was himself influenced by the scholars of other nations, such as the Greeks, from whom he took inspiration when he turned to the study of philosophy. A gifted linguist, he was conversant in Khwarezmian, Persian, Ar ...
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Hermes Trismegistos
Hermes Trismegistus (from grc, Ἑρμῆς ὁ Τρισμέγιστος, "Hermes the Thrice-Greatest"; Classical Latin: la, label=none, Mercurius ter Maximus) is a legendary Hellenistic figure that originated as a syncretic combination of the Greek god Hermes and the Egyptian god Thoth.A survey of the literary and archaeological evidence for the background of Hermes Trismegistus as the Greek god Hermes and the Egyptian god Thoth may be found in He is the purported author of the ''Hermetica'', a widely diverse series of ancient and medieval pseudepigraphical texts that lay the basis of various philosophical systems known as Hermeticism. The wisdom attributed to this figure in antiquity combined a knowledge of both the material and the spiritual world, which rendered the writings attributed to him of great relevance to those who were interested in the interrelationship between the material and the divine. The figure of Hermes Trismegistus can also be found in both Islamic ...
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