Pythagoras was born in ancient Greece from about 580 BC to about 500 BC (490 BC). He is a man who affects the west and even the whole world. The main achievement is the first person who paid special attention to "number", proved Pythagorean theorem, proved the number of regular polyhedron and founded Pythagorean school. Pythagoras is very talented in mathematics, and he has a passion and worship for mathematics. He put forward the concept of "everything is counted" and agreed that everything in the world can be represented by natural numbers, and there are laws to follow. He thinks that the numbers in nature are either integers or fractions.
It is also proposed to divide natural numbers into odd numbers, even numbers, prime numbers and square numbers. He not only proved the Pythagorean theorem, but also deduced the golden section formula. Pythagoras' life is legendary, and his influence on later generations may have been unexpected.