Mathematician Zu Chongzhi's classic short story: Zu Chongzhi was an outstanding mathematician and scientist in the Southern and Northern Dynasties. He was brilliant since he was a child. He liked to study Yin-Yang and Five Elements, mastered the calendar, and invented the Daming calendar.

Zu Chongzhi's research on pi is very in-depth. After years of hard work, he obtained the highest record of Pi accurate to seven decimal places. In ancient times, it was generally believed that pi was a "constant", but Zu Chongzhi proved that this "constant" was actually a variable through his own research.

In the process of studying pi, Zu Chongzhi also created a new algorithm, namely "suffix". This algorithm can be used to solve complex mathematical problems, and it is more accurate and simple than the general "calculation" algorithm at that time.

In addition to mathematical research, Zu Chongzhi also dabbled in astronomy, calendars and other fields. According to the astronomical phenomena he observed, he formulated the Daming calendar, which was more accurate than the calendar used at that time and was praised by many people.

Zu Chongzhi's main achievements

Mathematics: Zu Chongzhi's main contribution in mathematics is to calculate the true value of π between 3. 14 15926 (number) and 3. 14 15927 (abundance), which is equivalent to the seventh place after the decimal point, and is the most advanced achievement in the world at that time. This record was not broken by Arabian mathematician Cassie until15th century.

Zu Chongzhi also gave two fractional forms of π: 22/7 (approximate rate) and 355/ 12 (secret rate), in which the secret rate was accurate to the seventh place after the decimal point, which was not rediscovered by the western Dutch mathematician Otto until16th century. Zu Chongzhi, together with his son Zuxuan, successfully solved the problem of calculating the volume of the ball by using "Mouhe Square Cover" and got the correct formula of the volume of the ball.

Astronomical calendar: Zu Chongzhi created the Daming Calendar, which first introduced precession into the calendar; New leap weeks of 39 1 year and 144 leap months are adopted. For the first time, the data such as the number of months and days at the intersection (27.25438+0223) and the number of days in the tropical year (365.2428) were accurately measured, and the method of measuring the length of the sun shadow at noon from winter to the days before and after was invented to determine the time of winter solstice.

Reference to the above content: Baidu Encyclopedia-Zu Chongzhi