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Arima Yoriyuki
was a Japanese mathematician of the Edo period. He was the lord of Kurume Domain. He approximated the value of \pi and its square In Euclidean geometry, a square is a regular quadrilateral, which means that it has four equal sides and four equal angles (90-degree angles, π/2 radian angles, or right angles). It can also be defined as a rectangle with two equal-length adj ..., \pi^2. In 1766, he found the following rational approximation of \pi, correct to 29 digits: :\pi\approx\frac=3.14159265358979323846264338327(569...). References Further reading * 1714 births 1783 deaths 18th-century Japanese mathematicians Daimyo {{Asia-mathematician-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arima Yoriyuki
was a Japanese mathematician of the Edo period. He was the lord of Kurume Domain. He approximated the value of \pi and its square In Euclidean geometry, a square is a regular quadrilateral, which means that it has four equal sides and four equal angles (90-degree angles, π/2 radian angles, or right angles). It can also be defined as a rectangle with two equal-length adj ..., \pi^2. In 1766, he found the following rational approximation of \pi, correct to 29 digits: :\pi\approx\frac=3.14159265358979323846264338327(569...). References Further reading * 1714 births 1783 deaths 18th-century Japanese mathematicians Daimyo {{Asia-mathematician-stub ... [...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, structure, space, models, and change. History One of the earliest known mathematicians were Thales of Miletus (c. 624–c.546 BC); 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' Theorem. The number of known mathematicians grew when Pythagoras of Samos (c. 582–c. 507 BC) 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 mathematician recorded by history was Hypati ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Edo Period
The or is the period between 1603 and 1867 in the history of Japan, when Japan was under the rule of the Tokugawa shogunate and the country's 300 regional '' daimyo''. Emerging from the chaos of the Sengoku period, the Edo period was characterized by economic growth, strict social order, isolationist foreign policies, a stable population, perpetual peace, and popular enjoyment of arts and culture. The period derives its name from Edo (now Tokyo), where on March 24, 1603, the shogunate was officially established by Tokugawa Ieyasu. The period came to an end with the Meiji Restoration and the Boshin War, which restored imperial rule to Japan. Consolidation of the shogunate The Edo period or Tokugawa period is the period between 1603 and 1867 in the history of Japan, when Japan was under the rule of the Tokugawa shogunate and the country's regional '' daimyo''. A revolution took place from the time of the Kamakura shogunate, which existed with the Tennō's court, to the Tok ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kurume Domain
was a Japanese domain of the Edo period. It was associated with Chikugo Province in modern-day Fukuoka Prefecture on the island of Kyushu. In the han system, Kurume was a political and economic abstraction based on periodic cadastral surveys and projected agricultural yields. In other words, the domain was defined in terms of '' kokudaka'', not land area. This was different from the feudalism of the West. List of ''daimyōs'' The hereditary ''daimyōs'' were head of the clan and head of the domain. At Kurume, the Tokugawa ''shōguns'' granted 210,000 '' koku'' to the Arima clan_from_1620_to_1868.Edmond_Papinot.html" ;"title="DF 6-7 of 80/nowiki>">DF ... from 1620 to 1868.Edmond Papinot">Papinot, Jacques Edmond Joseph. (1906). ''Dictionnaire d’histoire et de géographie du Japon''; Papinot, (2003)"Arima" at ''Nobiliare du Japon'', pp. 2–3 retrieved 2013-4-4. Arima clan The is a Japanese samurai family. Papinot, Jacques Edmond Joseph. (1906). ''Dictionnaire d’ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Square (algebra)
In mathematics, a square is the result of multiplication, multiplying a number by itself. The verb "to square" is used to denote this operation. Squaring is the same as exponentiation, raising to the power 2 (number), 2, and is denoted by a superscript 2; for instance, the square of 3 may be written as 32, which is the number 9. In some cases when superscripts are not available, as for instance in programming languages or plain text files, the notations ''x''^2 (caret) or ''x''**2 may be used in place of ''x''2. The adjective which corresponds to squaring is ''wikt:quadratic, quadratic''. The square of an integer may also be called a square number or a perfect square. In algebra, the operation of squaring is often generalized to polynomials, other expression (mathematics), expressions, or values in systems of mathematical values other than the numbers. For instance, the square of the linear function (calculus), linear polynomial is the quadratic polynomial . One of the imp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1714 Births
Events January–March * January 21 – After being tricked into deserting a battle against India's Mughal Empire by the rebel Sayyid brothers, Prince Azz-ud-din Mirza is blinded on orders of the Emperor Farrukhsiyar as punishment. * February 7 – The Siege of Tönning (a fortress of the Swedish Empire and now located in Germany in the state of Schleswig-Holstein) ends after almost a year, as Danish forces force the surrender of the remaining 1,600 defenders. The fortress is then leveled by the Danes. * February 28 – (February 17 old style) Russia's Tsar Peter the Great issues a decree requiring compulsory education in mathematics for children of government officials and nobility, applying to children between the ages of 10 and 15 years old. * March 2 – (February 19 old style) The Battle of Storkyro is fought between troops of the Swedish Empire and the Russian Empire, near what is now the village of Napue in Finland. The outnumbered Swedish forces, under the c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1783 Deaths
Events January–March * January 20 – At Versailles, Great Britain signs preliminary peace treaties with the Kingdom of France and the Kingdom of Spain. * January 23 – The Confederation Congress ratifies two October 8, 1782, treaties signed by the United States with the United Netherlands. * February 3 – American Revolutionary War: Great Britain acknowledges the independence of the United States of America. At this time, the Spanish government does not grant diplomatic recognition. * February 4 – American Revolutionary War: Great Britain formally declares that it will cease hostilities with the United States. * February 5 – 1783 Calabrian earthquakes: The first of a sequence of five earthquakes strikes Calabria, Italy (February 5–7, March 1 & 28), leaving 50,000 dead. * February 7 – The Great Siege of Gibraltar is abandoned. * February 26 – The United States Continental Army's Corps of Engineers is disbanded. * March 5 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
18th-century Japanese Mathematicians
The 18th century lasted from January 1, 1701 ( MDCCI) to December 31, 1800 ( MDCCC). During the 18th century, elements of Enlightenment thinking culminated in the American, French, and Haitian Revolutions. During the century, slave trading and human trafficking expanded across the shores of the Atlantic, while declining in Russia, China, and Korea. Revolutions began to challenge the legitimacy of monarchical and aristocratic power structures, including the structures and beliefs that supported slavery. The Industrial Revolution began during mid-century, leading to radical changes in human society and the environment. Western historians have occasionally defined the 18th century otherwise for the purposes of their work. For example, the "short" 18th century may be defined as 1715–1789, denoting the period of time between the death of Louis XIV, Louis XIV of France and the start of the French Revolution, with an emphasis on directly interconnected events. To historians ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
