Around 480 AD, Zu Chongzhi, a mathematician in the Northern and Southern Dynasties, further got the result accurate to 7 decimal places, which was simplified to 3. 14 15926.
17 At the beginning of the 5th century, the Arabic mathematician Cassie got the exact decimal value of pi17, which broke the record kept by Zu Chongzhi for nearly a thousand years. German mathematician Ludolph van ceulen calculated π to 20 digits after the decimal point of 1596, and then spent his whole life calculating π to 35 digits after the decimal point of 16 10.
Zu Chongzhi (429-500), a native of Wen Yuan, was born in Jiankang County, Danyang County (now Nanjing, Jiangsu Province) and was born in Qie County, Fanyang County (now Laishui County, Hebei Province). He was an outstanding mathematician and astronomer in the Southern and Northern Dynasties.
Born in Fan Yangzu's family. He studied natural science all his life, mainly contributing to mathematics, astronomical calendar and mechanical manufacturing. On the basis of exploring the accurate method of pi pioneered by Liu Hui, he calculated pi to the seventh place after the decimal point for the first time, that is, between 3. 14 15926 and 3. 14 15927. His "ancestral rate" has made great contributions to mathematical research.
It was not until the 6th century A.D./KLOC-that the Arab mathematician Al Cassie broke this record.
The Daming Calendar written by him was the most scientific and progressive calendar at that time, which provided a correct method for future astronomical research. His main works are In the Frontier, Composition, Explaining Words, Li Yi and so on.
Characteristics of pi
It is of little practical significance to calculate the value of pi so accurately. A dozen pi values used in modern science and technology are enough. If the Hubble volume is calculated by using the 39-bit precision pi value, the error is less than the volume of an atom.
In the past, people calculated pi to explore whether pi circulated decimals. Since Lambert proved that pi is irrational in 176 1 and Lin Deman proved that pi is transcendental in 1882, the mystery of pi has been uncovered.