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Arabic Numerals
The ten Arabic numerals (0, 1, 2, 3, 4, 5, 6, 7, 8, and 9) are the most commonly used symbols for writing numbers. The term often also implies a positional notation number with a decimal base, in particular when contrasted with Roman numerals. However the symbols are also used to write numbers in other bases, such as octal, as well as non-numerical information such as trademarks or license plate identifiers. They are also called Western Arabic numerals, Western digits, European digits, Ghubār numerals, or Hindu–Arabic numerals due to positional notation (but not these digits) originating in India. The ''Oxford English Dictionary'' uses lowercase ''Arabic numerals'' while using the fully capitalized term ''Arabic Numerals'' for Eastern Arabic numerals. In contemporary society, the terms ''digits'', ''numbers'', and ''numerals'' often implies only these symbols, although it can only be inferred from context. Europeans first learned of Arabic numerals , though their spread ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
History Of The Hindu–Arabic Numeral System
The Hindu–Arabic numeral system is a decimal place-value numeral system that uses a zero glyph as in "205". Its glyphs are descended from the Indian Brahmi numerals. The full system emerged by the 8th to 9th centuries, and is first described outside India in Al-Khwarizmi's ''On the Calculation with Hindu Numerals'' (ca. 825), and second Al-Kindi's four-volume work ''On the Use of the Indian Numerals'' (ca. 830). Today the name ''Hindu–Arabic numerals'' is usually used. Decimal system Historians trace modern numerals in most languages to the Brahmi numerals, which were in use around the middle of the 3rd century BC. The place value system, however, developed later. The Brahmi numerals have been found in inscriptions in caves and on coins in regions near Pune, Maharashtra and Uttar Pradesh in India. These numerals (with slight variations) were in use up to the 4th century. During the Gupta period (early 4th century to the late 6th century), the Gupta numerals developed fro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Numerical Digit
A numerical digit (often shortened to just digit) or numeral is a single symbol used alone (such as "1"), or in combinations (such as "15"), to represent numbers in positional notation, such as the common base 10. The name "digit" originates from the Latin ''digiti'' meaning fingers. For any numeral system with an integer base, the number of different digits required is the absolute value of the base. For example, decimal (base 10) requires ten digits (0 to 9), and binary (base 2) requires only two digits (0 and 1). Bases greater than 10 require more than 10 digits, for instance hexadecimal (base 16) requires 16 digits (usually 0 to 9 and A to F). Overview In a basic digital system, a numeral is a sequence of digits, which may be of arbitrary length. Each position in the sequence has a place value, and each digit has a value. The value of the numeral is computed by multiplying each digit in the sequence by its place value, and summing the results. Di ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Codex Vigilanus Primeros Numeros Arabigos
The codex (: codices ) was the historical ancestor format of the modern book. Technically, the vast majority of modern books use the codex format of a stack of pages bound at one edge, along the side of the text. But the term ''codex'' is now reserved for older manuscript books, which mostly used sheets of vellum, parchment, or papyrus, rather than paper. By convention, the term is also used for any Aztec codex (although the earlier examples do not actually use the codex format), Maya codices and other pre-Columbian manuscripts. Library practices have led to many European manuscripts having "codex" as part of their usual name, as with the Codex Gigas, while most do not. Modern books are divided into paperback (or softback) and those bound with stiff boards, called hardbacks. Elaborate historical bindings are called treasure bindings. At least in the Western world, the main alternative to the paged codex format for a long document was the continuous scroll, which was the domina ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Houghton Typ 520
Houghton may refer to: Places Australia * Houghton, South Australia, a town near Adelaide * Houghton Highway, the longest bridge in Australia, between Redcliffe and Brisbane in Queensland * Houghton Island (Queensland) Canada * Houghton Township, Ontario, a former township in Norfolk County, Ontario New Zealand * Houghton Bay South Africa * Houghton Estate, a suburb of Johannesburg United Kingdom * Hanging Houghton, Northamptonshire * Houghton, Cambridgeshire * Houghton, Cumbria * Houghton, East Riding of Yorkshire * Houghton, Hampshire * Houghton, Norfolk * Houghton Saint Giles, Norfolk * Houghton, Northumberland, a location in the United Kingdom * Houghton, Pembrokeshire * Houghton, West Sussex *Houghton-le-Side, Darlington *Houghton-le-Spring, Sunderland * Houghton Park, Houghton-le-Spring * Houghton Bank, Darlington * Houghton Conquest, Bedfordshire * Houghton on the Hill, Leicestershire * Houghton on the Hill, Norfolk * Houghton Regis, Bedfordshire * New Houghton, Der ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Abu'l-Hasan Al-Uqlidisi
Abū al-Ḥassan, Aḥmad Ibn Ibrāhīm, al-Uqlīdisī (, ) was a Muslim Arab mathematician of the Islamic Golden Age, possibly from Damascus, who wrote the earliest surviving book on the use of decimal fractions with Hindu–Arabic numerals, ''Kitāb al-Fuṣūl fī al-Ḥisāb al-Hindī'' (''The Book of Chapters on Hindu Arithmetic''), in Arabic in 952. The book is well preserved in a single 12th century manuscript,MS 802 at Yeni Cami Library, Istanbul, written in 582 AH (1186 AD) but other than the author's name, original year of publication (341 AH, 952/3 AD) and the place (Damascus) we know nothing else about the author: after an extensive survey of extant reference material, mathematical historian Ahmad Salīm Saʿīdān, who discovered the manuscript in 1960, could find no other mention of him. His nickname ''al-Uqlīdisī'' ("the Euclidean") was commonly given to people who sold manuscript copies of Euclid's ''Elements''. In the introductory remarks to his ''Arithmetic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Toledo, Spain
Toledo ( ; ) is a city and Municipalities of Spain, municipality of Spain, the capital of the province of Toledo and the ''de jure'' seat of the government and parliament of the autonomous communities of Spain, autonomous community of Castilla–La Mancha. Toledo is primarily located on the right (north) bank of the Tagus in central Iberian Peninsula, Iberia, nestled in a bend of the river. Built on a previous Carpetanian settlement, Toledo developed into an important Roman city of Hispania, later becoming the capital (''civitas regia'') of the Visigothic Kingdom and seat of a Roman Catholic Archdiocese of Toledo, powerful archdiocese. Often unsubmissive to Emirate of Córdoba, Umayyad central rule during the Islamic period, Toledo (طليطلة) nonetheless acquired a status as a major cultural centre (promoting productive cultural exchanges between the Ummah and the Latin Christendom), which still retained after the Fitna of al-Andalus, collapse of the caliphate and the crea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Etymologiae
(Latin for 'Etymologies'), also known as the ('Origins'), usually abbreviated ''Orig.'', is an etymological encyclopedia compiled by the influential Christian bishop Isidore of Seville () towards the end of his life. Isidore was encouraged to write the book by his friend Braulio, Bishop of Saragossa. summarized and organized a wealth of knowledge from hundreds of classical sources; three of its books are derived largely from Pliny the Elder's ''Natural History''. Isidore acknowledges Pliny, but not his other principal sources, namely Cassiodorus, Servius, and Gaius Julius Solinus. covers an encyclopedic range of topics. Etymology, the origins of words, is prominent, but the work also covers, among other things, grammar, rhetoric, mathematics, geometry, music, astronomy, medicine, law, the church and heretical sects, pagan philosophers, languages, cities, humans, animals, the physical world, geography, public buildings, roads, metals, rocks, agriculture, war, ships, cloth ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Isidore Of Seville
Isidore of Seville (; 4 April 636) was a Spania, Hispano-Roman scholar, theologian and Roman Catholic Archdiocese of Seville, archbishop of Seville. He is widely regarded, in the words of the 19th-century historian Charles Forbes René de Montalembert, as "the last scholar of the ancient world". At a time of disintegration of classical culture, aristocratic violence, and widespread illiteracy, Isidore was involved in the conversion of the Arianism, Arian Visigothic kings to Chalcedonian Christianity, both assisting his brother Leander of Seville and continuing after Leander's death. He was influential in the inner circle of Sisebut, Visigothic king of Hispania. Like Leander, he played a prominent role in the Councils of Toledo and Seville. His fame after his death was based on his ''Etymologiae'', an etymology, etymological encyclopedia that assembled extracts of many books from classical antiquity that would otherwise have been lost. This work also helped to standardise the use ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Al-Andalus
Al-Andalus () was the Muslim-ruled area of the Iberian Peninsula. The name refers to the different Muslim states that controlled these territories at various times between 711 and 1492. At its greatest geographical extent, it occupied most of the peninsula as well as Septimania under Umayyad rule. These boundaries changed through a series of conquests Western historiography has traditionally characterized as the ''Reconquista'',"Para los autores árabes medievales, el término Al-Andalus designa la totalidad de las zonas conquistadas – siquiera temporalmente – por tropas arabo-musulmanas en territorios actualmente pertenecientes a Portugal, España y Francia" ("For medieval Arab authors, Al-Andalus designated all the conquered areas – even temporarily – by Arab-Muslim troops in territories now belonging to Spain, Portugal and France"), García de Cortázar, José Ángel. ''V Semana de Estudios Medievales: Nájera, 1 al 5 de agosto de 1994'', Gobie ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Maghreb
The Maghreb (; ), also known as the Arab Maghreb () and Northwest Africa, is the western part of the Arab world. The region comprises western and central North Africa, including Algeria, Libya, Mauritania, Morocco, and Tunisia. The Maghreb also includes the territorial dispute, disputed territory of Western Sahara. As of 2018, the region had a population of over 100 million people. The Maghreb is usually defined as encompassing much of the northern part of Africa, including a large portion of the Sahara Desert, but excluding Egypt and the Sudan, which are considered to be located in the Mashriq — the eastern part of the Arab world. The traditional definition of the Maghreb — which restricted its scope to the Atlas Mountains and the coastal plains of Morocco, Algeria, Tunisia and Libya — was expanded in modern times to include Mauritania and the disputed territory of Western Sahara. During the era of al-Andalus on the Iberian Peninsula (711–1492), the Maghreb's inhabita ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alī Ibn Ahmad Al-Nasawī
Alī ibn Aḥmad al-Nasawī (; c. 1011 possibly in Khurasan – c. 1075 in Baghdad) was a Persian mathematician from Khurasan, Iran. He flourished under the Buwayhid sultan Majd al-dowleh, who died in 1029-30AD, and under his successor. He wrote a book on arithmetic in Persian, and then Arabic, entitled the "Satisfying (or Convincing) on Hindu Calculation" (''al-muqni fi-l-hisab al Hindi''). He also wrote on Archimedes's '' Book of Lemmas'' and Menelaus's theorem (''Kitab al-ishba'', or "satiation"), where he made corrections to the ''Book of Lemmas'' as translated into Arabic by Thabit ibn Qurra and last revised by Nasir al-Din al-Tusi. Al-Nasawī's arithmetic explains the division of fractions and the extraction of square and cubic roots (square root of 57,342; cubic root of 3, 652, 296) almost in the modern manner. Al-Nasawī replaces sexagesimal by decimal fractions. Al-Nasawī criticises earlier authors, but in many cases incorrectly. His work was not original, and he so ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
