|
Zu Gengzhi
Zu Geng or Zu Gengzhi (; ca. 480 – ca. 525) was a Chinese mathematician, politician, and writer. His courtesy name was Jingshuo (). He was the son of the famous mathematician Zu Chongzhi. He is known principally for deriving and proving the formula for the volume of a sphere. He additionally measured the angular distance between Polaris and the celestial north pole. See also *List of Chinese mathematicians This is a list of Chinese mathematicians. With a history spanning over three millennia, Chinese mathematics is believed to have initially developed largely independently of other cultures. {{Expand list, date=December 2016 Classical Chinese mathem ... References External links * 480 births 525 deaths 5th-century Chinese mathematicians 6th-century Chinese writers 6th-century Chinese mathematicians Ancient Chinese mathematicians Liang dynasty politicians Southern Qi politicians {{Asia-mathematician-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Courtesy Name
A courtesy name (), also known as a style name, is a name bestowed upon one at adulthood in addition to one's given name. This practice is a tradition in the East Asian cultural sphere, including China, Japan, Korea, and Vietnam.Ulrich TheobaldNames of Persons and Titles of Rulers/ref> A courtesy name is not to be confused with an art name, another frequently mentioned term for an alternative name in East Asia, which is closer to the concept of a pen name or a pseudonym. Usage A courtesy name is a name traditionally given to Chinese men at the age of 20 ''sui'', marking their coming of age. It was sometimes given to women, usually upon marriage. The practice is no longer common in modern Chinese society. According to the ''Book of Rites'', after a man reached adulthood, it was disrespectful for others of the same generation to address him by his given name. Thus, the given name was reserved for oneself and one's elders, whereas the courtesy name would be used by adults of t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zu (surname)
Zu is the Mandarin pinyin romanization of the Chinese surname written in Chinese character. It is romanized Tsu in Wade–Giles. It is listed 249th in the Song dynasty classic text ''Hundred Family Surnames''. It is not among the 300 most common surnames in China. Notable people * Zu Ti ( 祖逖; 266–321), celebrated Eastern Jin general * Zu Yue ( 祖約; died 330), Eastern Jin general, younger brother of Zu Ti * Zu Chongzhi (429–500), Liu Song dynasty mathematician and astronomer * Zu Gengzhi (450? – 520?), mathematician, son of Zu Chongzhi * Zu Ting (6th century), scholar-official of the Northern Qi dynasty * Zu Xiaosun (6th – 7th century), Sui and Tang dynasty musician * Zu Yong (699–746?), Tang dynasty poet * Zu Dashou (died 1656), Ming dynasty general who surrendered to the Qing * Zu Zhiwang ( 祖之望; 1754–1813), Qing dynasty Governor of Hunan and Shandong Shandong ( , ; ; alternately romanized as Shantung) is a coastal province of the People's Rep ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zu Chongzhi
Zu Chongzhi (; 429–500 AD), courtesy name Wenyuan (), was a Chinese astronomer, mathematician, politician, inventor, and writer during the Liu Song and Southern Qi dynasties. He was most notable for calculating pi as between 3.1415926 and 3.1415927, a record in accuracy which would not be surpassed for over 800 years. Life and works Chongzhi's ancestry was from modern Baoding, Hebei. To flee from the ravages of war, Zu's grandfather Zu Chang moved to the Yangtze, as part of the massive population movement during the Eastern Jin. Zu Chang () at one point held the position of Chief Minister for the Palace Buildings () within the Liu Song and was in charge of government construction projects. Zu's father, Zu Shuozhi (), also served the court and was greatly respected for his erudition. Zu was born in Jiankang. His family had historically been involved in astronomical research, and from childhood Zu was exposed to both astronomy and mathematics. When he was only a youth his tal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Encyclopædia Britannica
The (Latin for "British Encyclopædia") is a general knowledge English-language encyclopaedia. It is published by Encyclopædia Britannica, Inc.; the company has existed since the 18th century, although it has changed ownership various times through the centuries. The encyclopaedia is maintained by about 100 full-time editors and more than 4,000 contributors. The 2010 version of the 15th edition, which spans 32 volumes and 32,640 pages, was the last printed edition. Since 2016, it has been published exclusively as an online encyclopaedia. Printed for 244 years, the ''Britannica'' was the longest running in-print encyclopaedia in the English language. It was first published between 1768 and 1771 in the Scottish capital of Edinburgh, as three volumes. The encyclopaedia grew in size: the second edition was 10 volumes, and by its fourth edition (1801–1810) it had expanded to 20 volumes. Its rising stature as a scholarly work helped recruit eminent con ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polaris
Polaris is a star in the northern circumpolar constellation of Ursa Minor. It is designated α Ursae Minoris ( Latinized to ''Alpha Ursae Minoris'') and is commonly called the North Star or Pole Star. With an apparent magnitude that fluctuates around 1.98, it is the brightest star in the constellation and is readily visible to the naked eye at night. The position of the star lies less than 1° away from the north celestial pole, making it the current northern pole star. The stable position of the star in the Northern Sky makes it useful for navigation. As the closest Cepheid variable its distance is used as part of the cosmic distance ladder. The revised ''Hipparcos'' stellar parallax gives a distance to Polaris of about , while the successor mission ''Gaia'' gives a distance of about . Calculations by other methods vary widely. Although appearing to the naked eye as a single point of light, Polaris is a triple star system, composed of the primary, a yellow super ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Celestial Pole
The north and south celestial poles are the two points in the sky where Earth's rotation around a fixed axis, axis of rotation, indefinitely extended, intersects the celestial sphere. The north and south celestial poles appear permanently directly overhead to observers at Earth's North Pole and South Pole, respectively. As Earth spins on its axis, the two celestial poles remain fixed in the sky, and all other celestial points appear to rotate around them, completing one circuit per day (strictly, per sidereal time, sidereal day). The celestial poles are also the poles of the celestial equatorial coordinate system, meaning they have declinations of +90 degrees and −90 degrees (for the north and south celestial poles, respectively). Despite their apparently fixed positions, the celestial poles in the long term do not actually remain permanently fixed against the background of the stars. Because of a phenomenon known as the precession of the equinoxes, the poles trace out ci ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Chinese Mathematicians
This is a list of Chinese mathematicians. With a history spanning over three millennia, Chinese mathematics is believed to have initially developed largely independently of other cultures. {{Expand list, date=December 2016 Classical Chinese mathematicians *Jing Fang: 78 – 37 BC * Liu Xin: c. 50 BC – 23 AD * Zhang Heng: 78 – 139 AD * Liu Hong: 129 – 210 AD *Cai Yong: 132 – 192 AD *Liu Hui: 225 – 295 AD *Wang Fan: 228 – 266 AD *Sun Tzu: c. 3rd – 5th century AD *Zu Chongzhi: 429 – 500 AD *Zu Gengzhi: c. 450 – c. 520 AD Middle Imperial Chinese mathematicians *Zhen Luan: 535–566 * Wang Xiaotong: 580–640 * Li Chunfeng: 602–670 *Yi Xing: 683–727 *Wei Pu: 11th century *Jia Xian: 1010–1070 * Su Song: 1020–1101 * Shen Kuo: 1031–1095 *Li Zhi: 1192–1279 *Qin Jiushao: c. 1202–1261 * Guo Shoujing: 1231–1316 *Yang Hui: c. 1238–1298 *Zhu Shijie: 1249–1314 Late Imperial Chinese mathematicians *Cheng Dawei: 1533–1606 *Zhu Zaiyu: 1536–1611 *Xu Guangqi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
480 Births
{{number disambiguation ...
48 may refer to: * 48 (number) * one of the years 48 BC, AD 48, 1948, 2048 * ''48'' (novel) * 48'' (magazine) * "48", a song by Tyler, the Creator from the album ''Wolf'' * 48, a phone network brand of Three Ireland * "Forty Eight", a song by Karma to Burn from the album '' V'', 2011 See also * A48 (other) A48 may refer to : * A48 motorway (France), a road connecting the A43 and Grenoble * A48 road (Great Britain), a road connecting Gloucester, England and Carmarthen, Wales * Autovía A-48, a motorway under construction connecting Cadiz and Algeciras, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
525 Deaths
5 (five) is a number, numeral and digit. It is the natural number, and cardinal number, following 4 and preceding 6, and is a prime number. It has attained significance throughout history in part because typical humans have five digits on each hand. In mathematics 5 is the third smallest prime number, and the second super-prime. It is the first safe prime, the first good prime, the first balanced prime, and the first of three known Wilson primes. Five is the second Fermat prime and the third Mersenne prime exponent, as well as the third Catalan number, and the third Sophie Germain prime. Notably, 5 is equal to the sum of the ''only'' consecutive primes, 2 + 3, and is the only number that is part of more than one pair of twin primes, ( 3, 5) and (5, 7). It is also a sexy prime with the fifth prime number and first prime repunit, 11. Five is the third factorial prime, an alternating factorial, and an Eisenstein prime with no imaginary part and real part of the form 3p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
5th-century Chinese Mathematicians
The 5th century is the time period from 401 ( CDI) through 500 ( D) ''Anno Domini'' (AD) or Common Era (CE) in the Julian calendar. The 5th century is noted for being a period of migration and political instability throughout Eurasia. It saw the collapse of the Western Roman Empire, which came to an end in 476 AD. This empire had been ruled by a succession of weak emperors, with the real political might being increasingly concentrated among military leaders. Internal instability allowed a Visigoth army to reach and ransack Rome in 410. Some recovery took place during the following decades, but the Western Empire received another serious blow when a second foreign group, the Vandals, occupied Carthage, capital of an extremely important province in Africa. Attempts to retake the province were interrupted by the invasion of the Huns under Attila. After Attila's defeat, both Eastern and Western empires joined forces for a final assault on Vandal North Africa, but this campaign was a s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
6th-century Chinese Writers
The 6th century is the period from 501 through 600 in line with the Julian calendar. In the West, the century marks the end of Classical Antiquity and the beginning of the Middle Ages. The collapse of the Western Roman Empire late in the previous century left Europe fractured into many small Germanic kingdoms competing fiercely for land and wealth. From the upheaval the Franks rose to prominence and carved out a sizeable domain covering much of modern France and Germany. Meanwhile, the surviving Eastern Roman Empire began to expand under Emperor Justinian, who recaptured North Africa from the Vandals and attempted fully to recover Italy as well, in the hope of reinstating Roman control over the lands once ruled by the Western Roman Empire. In its second Golden Age, the Sassanid Empire reached the peak of its power under Khosrau I in the 6th century.Roberts, J: "History of the World.". Penguin, 1994. The classical Gupta Empire of Northern India, largely overrun by the Huna, ended in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
