Zhao Youqin (趙友欽 1271-?) was a Chinese mathematician, astronomer, alchemist, and Taoist monk. He is most well known for his book Ge xiang xin shu (革象新书)...
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Zhao Youqin's π algorithm was an algorithm devised by Yuan dynasty Chinese astronomer and mathematician Zhao Youqin (赵友钦, ? – 1330) to calculate the value...
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Brahmagupta √10 3.162277... 1 800 Al Khwarizmi 3.1416 3 1150 Bhāskara II 3927⁄1250 and 754⁄240 3.1416 3 1220 Fibonacci 3.141818 3 1320 Zhao Youqin 3.141592 6...
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calculated 20 digits in 1596. Method of exhaustion (5th century BC) Zhao Youqin's π algorithm (13-14th century) Proof of Newton's Formula for Pi (17th...
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2307/3029284. ISSN 0025-570X. JSTOR 3029284.. Volkov, Alexeï (1997). "Zhao Youqin and his calculation of π". Historia Mathematica. 24 (3): 301–331. doi:10...
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Song dynasty (redirect from Zhao Song)
ISBN 978-0-671-62028-8 Veeck, Gregory; Pannell, Clifton W.; Smith, Christopher J.; Huang, Youqin (2007), China's Geography: Globalization and the Dynamics of Political,...
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household production in the countryside." According to research conducted by Youqin Huang and published in the journal Environment and Planning A, "the constraints...
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Archived from the original on 6 March 2019. Retrieved 2 March 2019. Wang, Youqin (2001). "Student Attacks Against Teachers: The Revolution of 1966" (PDF)...
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Routledge, 2013. ISBN 1136230963. p. 423 Zai Liang, Steven Messner, Cheng Chen, Youqin Huang. The Emergence of a New Urban China: Insiders' Perspectives. Lexington...
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Wayback Machine 2012-11-14 (Chinese) "毛泽东八次接见红卫兵始末(上) " 新闻午报 2006-04-19 Youqin Wang, "Student Attacks Against Teachers: The Revolution of 1966" Memorial...
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American Sociological Association, New York City. Cui, Can; Yu, Shan; Huang, Youqin (2023). "His house, her house? Gender inequality and homeownership among...
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2013-01-24. 他的去世促成《继承法》问世：说说曾国藩旁系曾昭抡的故事. 163.com (in Chinese). 2018-10-30. Youqin Wang. "Student Attacks Against Teachers: The Revolution of 1966" (PDF)....
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