(2) Northern and Southern Dynasties: ① Liu Hui, a mathematician in Wei and Jin Dynasties, put forward a correct method to calculate pi by using limit theory. ② Zu Chongzhi in the Southern Dynasties accurately calculated pi between 3.1415926-3.1415927, which was nearly a thousand years earlier than foreign countries. His monograph seal script has made outstanding contributions to the development of mathematics.
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Ji suan suanjing
This paper mainly discusses earthwork calculation, division of labor, acceptance and calculation of warehouses and cellars in civil engineering.
Ten classic books on computing
Classic of island computing
Nine Chapters of the Yellow Emperor,
On the roots of ancient times,
Arithmetic enlightenment and four-element jade sword
Nine chapters of algorithm, daily algorithm and detailed explanation of Yang Hui algorithm,
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