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The date of the invention of the suan pan is not certain, but the earliest written mention dates from AD 190, in Xu Yue's Supplementary Notes on the Art of Figures. The oldest extant work on geometry in China comes from the philosophical Mohist canon c. 330 BC , compiled by the followers of Mozi (470–390 BC).
This is a timeline of English history, comprising important legal and territorial changes and political events in England and its predecessor states. To read about the background to these events, see History of England .
Euclid (/ ˈ j uː k l ɪ d /; Ancient Greek: Εὐκλείδης; fl. 300 BC) was an ancient Greek mathematician active as a geometer and logician. [2] Considered the "father of geometry", [3] he is chiefly known for the Elements treatise, which established the foundations of geometry that largely dominated the field until the early 19th century.
Positive and negative associations with culturally significant dates may influence birth rates. The study shows a 5.3% decrease in spontaneous births and a 16.9% decrease in Caesarean births on Halloween, compared to dates occurring within one week before and one week after the October holiday. In contrast, on Valentine's Day there is a 3.6% ...
1944 – Commencement of Operation Overlord, the Allied invasion of Normandy, with the execution of Operation Neptune—commonly referred to as D-Day—the largest seaborne invasion in history. Nearly 160,000 Allied troops cross the English Channel with about 5,000 landing and assault craft, 289 escort vessels, and 277 minesweepers participating.
The Elizabethan era was the epoch in English history of Queen Elizabeth I's reign (1558–1603). Historians often depict it as the golden age in English history. The symbol of Britannia was first used in 1572 and often thereafter to mark the Elizabethan age as a renaissance that inspired national pride through classical ideals, international ...
Jessica DeCristofaro was diagnosed with stage 4B Hodgkin’s lymphoma, a rare form of cancer, at 28 years old. Here, she shares her story and what doctors missed.
The apparent plural form in English goes back to the Latin neuter plural mathematica , based on the Greek plural ta mathēmatiká (τὰ μαθηματικά) and means roughly "all things mathematical", although it is plausible that English borrowed only the adjective mathematic(al) and formed the noun mathematics anew, after the pattern of ...