◆ The story of pi

1. Zu Chongzhi, ranked seventh, ranked first in the world, maintained for a thousand years; "The accuracy of a country's calculation of pi in history can be used as a sign to measure the level of mathematical development in this country at that time."

2. 1427, Arab mathematician Alkasi,16;

1596, Dutch mathematician Rudolf, 35 years old;

1990, with 480 million computers;

65438+February 6, 2002, Tokyo University, 124 1 1 billion.

◆"0"

Roman numerals have no 0;

In the fifth century, "0" spread from the East to Rome. At that time, the Pope was very conservative and thought that Roman numerals could be used to remember any number, so "0" was forbidden. A Roman scholar's handbook introduced some usages of 0 and 0, and the Pope tortured them after discovering it.

◆ Measure the Fiona Fang of the world with "rules" and "moments"

In the stone statue of an ancient building in Jiaxiang County, Shandong Province, there are two images of our ancient ancestors deified in ancient times, one is Fuxi and the other is Nu Wa. The object in Fuxi's hand is a compass, similar to a compass; The object in Nu Wa's hand is called Moment, which is in the shape of a square.

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