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Li Zhi (mathematician)
Li Ye (; 1192–1279), born Li Zhi (), courtesy name Li Jingzhai (),Breard, Andrea. (Jan 01, 2021).Li Ye: Chinese mathematician. ''Encyclopaedia Britannica''. Accessed 7 February 2021.Li, Ye (1192-1279) 李, 冶 (1192-1279) IdRef: ''Identifiants et Référentials pour l'enseignement supérieur et la recherche'' (French). Accessed 19 February 2018. was a Chinese scientist and writer who published and improved the tian yuan shu method for solving s of one variable. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Li (surname 李)
Li or Lee (; ) is a common Chinese-language surname, it is the 4th name listed in the famous ''Hundred Family Surnames.'' Li is one of the most common surnames in Asia, shared by 92.76 million people in China, and more than 100 million in Asia. It is the second most common surname in China as of 2018, the second most common surname in Hong Kong, and the 5th most common surname in Taiwan, where it is usually romanized as "Lee". The surname is pronounced as () in Cantonese, ''Lí'' ( poj) in Taiwanese Hokkien, but is often spelled as "Lee" in Hong Kong, Macau, Taiwan and many overseas Chinese communities. In Macau, it is also spelled as "Lei". In Indonesia it is commonly spelled as "Lie". The common Korean surname, " Lee" (also romanized as "I", "Yi", "Ri", or "Rhee"), and the Vietnamese surname, " Lý", are both derived from Li and written with the same Chinese character (李). The character also means "plum" or "plum tree". Demographics and distribution Li, Lee 李 is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jun Prefecture
Junzhou or either Jun Prefecture (均州) was a '' zhou'' (prefecture) in imperial China, seated in modern Danjiangkou, Hubei, China. It existed (intermittently) between the years 585 and 1912. Geography The administrative region of Junzhou in the Tang dynasty is in modern Shiyan and Hubei. It probably includes parts of modern Shiyan Shiyan () is a prefecture-level city in northwestern Hubei, China, bordering Henan to the northeast, Chongqing to the southwest, and Shaanxi to the north and west. At the 2020 census, its population was 3,209,004 of whom 1,033,407 lived in the b ..., Danjiankou and Yun County. References * Prefectures of the Tang dynasty Prefectures of Later Tang Prefectures of Later Liang (Five Dynasties) Prefectures of Later Jin (Five Dynasties) Prefectures of Later Han (Five Dynasties) Prefectures of Later Zhou Prefectures of the Song dynasty Prefectures of the Sui dynasty Prefectures of the Yuan dynasty Subprefectures of the Ming dynasty Depart ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Right Triangle
A right triangle (American English) or right-angled triangle ( British), or more formally an orthogonal triangle, formerly called a rectangled triangle ( grc, ὀρθόσγωνία, lit=upright angle), is a triangle in which one angle is a right angle (that is, a 90- degree angle), i.e., in which two sides are perpendicular. The relation between the sides and other angles of the right triangle is the basis for trigonometry. The side opposite to the right angle is called the '' hypotenuse'' (side ''c'' in the figure). The sides adjacent to the right angle are called ''legs'' (or ''catheti'', singular: '' cathetus''). Side ''a'' may be identified as the side ''adjacent to angle B'' and ''opposed to'' (or ''opposite'') ''angle A'', while side ''b'' is the side ''adjacent to angle A'' and ''opposed to angle B''. If the lengths of all three sides of a right triangle are integers, the triangle is said to be a Pythagorean triangle and its side lengths are collectively known as a '' Pyt ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ceyuan Haijing
''Ceyuan haijing'' () is a treatise on solving geometry problems with the algebra of Tian yuan shu written by the mathematician Li Zhi in 1248 in the time of the Mongol Empire. It is a collection of 692 formula and 170 problems, all derived from the same master diagram of a round town inscribed in a right triangle and a square. They often involve two people who walk on straight lines until they can see each other, meet or reach a tree or pagoda in a certain spot. It is an algebraic geometry book, the purpose of book is to study intricated geometrical relations by algebra. Majority of the geometry problems are solved by polynomial equations, which are represented using a method called tian yuan shu, "coefficient array method" or literally "method of the celestial unknown". Li Zhi is the earliest extant source of this method, though it was known before him in some form. It is a positional system of rod numerals to represent polynomial equations. ''Ceyuan haijing'' was first introd ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Feng Lung
Feng may refer to: *Feng (surname), one of several Chinese surnames in Mandarin: **Féng (surname) ( wikt:冯 féng 2nd tone "gallop"), very common Chinese surname **Fèng (surname) ( wikt:鳳 fèng 4th tone "phoenix"), relatively common Chinese family name **Fēng (surname) ( wikt:風 fēng 1st tone "wind"), rare Chinese surname **Fèng ( wikt:奉 fèng 4th tone "offer"), rare Chinese surname *Feng (chieftain), legendary Jutish chieftain and the prototype for William Shakespeare's King Claudius *FEng, Fellow of Royal Academy of Engineering *Fengjing, the former capital of the duchy of Zhou during the late Shang dynasty *Feng County, Shaanxi, in China *Feng County, Jiangsu, in China *Fenghuang, mythological birds of East Asia *Feng (mythology), Chinese legendary creature that resembles a lump of meat and regenerates after being eaten *Cardinal Feng, in Monty Python's Spanish Inquisition *Feng Office (web application), open source team collaboration software * Feng (program), opensou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hanlin Academy
The Hanlin Academy was an academic and administrative institution of higher learning founded in the 8th century Tang China by Emperor Xuanzong in Chang'an. Membership in the academy was confined to an elite group of scholars, who performed secretarial and literary tasks for the court. One of its main duties was to decide on an interpretation of the Chinese classics. This formed the basis of the Imperial examinations, which aspiring government bureaucrats had to pass to attain higher-level government posts. Painters working for the court were also attached to the academy. Academy members Some of the more famous academicians of Hanlin were: * Li Bai (701–762) – Poet *Bai Juyi (772–846) – Poet * Yan Shu (991–1055) – Poet, calligrapher, (prime minister, 1042) * Ouyang Xiu (1007–1072) – Historian * Shen Kuo (1031–1095) – Chancellor * Zhang Zeduan (1085–1145) – Painter * Zhao Mengfu (1254–1322) – Painter, calligrapher, poet (rector, 1314–1320) * Huang Z ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Khan (title)
Khan ''khan/qan''; tr, han; Azerbaijani: ''xan''; Ottoman: ''han''; Old Turkic: ''kan''; Chinese: 汗 ''hán''; Goguryeo: 皆 ''key''; Buyeo: 加 ''ka''; Silla: 干 ''kan''; Gaya: 旱 ''kan''; Baekje: 瑕 ''ke''; Manchu: ; Persian: خان; Punjabi: ਖ਼ਾਨ; Hindustani: ख़ान or ख़ां (Devanagari), or ( Nastaleeq); Balochi: خان; Bulgarian: хан, ''khan''; Chuvash: хун, ''hun''; Arabic: خان; bn, খান or ) () is a historic Turko-Mongol title originating among nomadic tribes in the Central and Eastern Eurasian Steppe to refer to a chief or ruler. It first appears among the Rouran and then the Göktürks as a variant of khagan (sovereign, emperor) and implied a subordinate ruler. In the Seljuk Empire, it was the highest noble title, ranking above malik (king) and emir (prince). In the Mongol Empire it signified the ruler of a horde (''ulus''), while the ruler of all the Mongols was the khagan or great khan. The title subsequentl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Genghis Khan
Genghis Khan (born Temüjin; ; xng, Temüjin, script=Latn; ., name=Temujin – August 25, 1227) was the founder and first Great Khan (Emperor) of the Mongol Empire, which became the List of largest empires, largest contiguous empire in history after his death. He came to power by uniting many of the nomadic tribes of the Mongol steppe and being proclaimed the universal List of Mongol rulers, ruler of the Mongols, or ''Genghis Khan''. With the tribes of Northeast Asia largely under his control, he set in motion the Mongol invasions and conquests, Mongol invasions, which ultimately witnessed the conquest of much of Eurasia, and incursions by Mongol raiding parties as far west as Legnica in Mongol Empire#Push into central Europe, western Poland and as far south as Gaza City, Gaza. He launched campaigns against the Mongol conquest of the Qara Khitai, Qara Khitai, Mongol conquest of the Khwarazmian Empire, Khwarezmia, the Mongol conquest of Western Xia, Western Xia and Mongol conquest ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kublai Khan
Kublai ; Mongolian script: ; (23 September 1215 – 18 February 1294), also known by his temple name as the Emperor Shizu of Yuan and his regnal name Setsen Khan, was the founder of the Yuan dynasty of China and the fifth khagan-emperor of the Mongol Empire from 1260 to 1294, although after the division of the empire this was a nominal position. He proclaimed the empire's dynastic name "Great Yuan" in 1271, and ruled Yuan China until his death in 1294. Kublai was the second son of Tolui by his chief wife Sorghaghtani Beki, and a grandson of Genghis Khan. He was almost 12 when Genghis Khan died in 1227. He had succeeded his older brother Möngke as Khagan in 1260, but had to defeat his younger brother Ariq Böke in the Toluid Civil War lasting until 1264. This episode marked the beginning of the fragmentation of the empire. Kublai's real power was limited to the Yuan Empire, even though as Khagan he still had influence in the Ilkhanate and, to a significantly lesser deg ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hebei
Hebei or , (; alternately Hopeh) is a northern province of China. Hebei is China's sixth most populous province, with over 75 million people. Shijiazhuang is the capital city. The province is 96% Han Chinese, 3% Manchu, 0.8% Hui, and 0.3% Mongol. Three Mandarin dialects are spoken: Jilu Mandarin, Beijing Mandarin and Jin. Hebei borders the provinces of Shanxi to the west, Henan to the south, Shandong to the southeast, Liaoning to the northeast, and the Inner Mongolia Autonomous Region to the north. Its economy is based on agriculture and manufacturing. The province is China's premier steel producer, although the steel industry creates serious air pollution. Five UNESCO World Heritage Sites can be found in the province, the: Great Wall of China, Chengde Mountain Resort, Grand Canal, Eastern Qing tombs, and Western Qing tombs. It is also home to five National Famous Historical and Cultural Cities: Handan, Baoding, Chengde, Zhengding and Shanhaiguan. Historically, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
