1, Pythagoras theorem
In the west, the Pythagorean school of ancient Greece in the 6th century BC first proposed and proved this theorem. He proved by deduction that the square of the hypotenuse of a right triangle is equal to the sum of the squares of two right angles. Pythagoras came up with the law behind it. Digital fundamentalist, a tyrant who holds high the idea that everything is digital, really loves mathematics. Pythagoras theorem is the first time in human history that numbers and geometry are perfectly integrated.
2. Euler formula
Euler was blind in his right eye at the age of 28 and completely blind at the age of 60. He was versatile. With his extensive attainments in mathematics, mechanics and maritime architecture, he was rated as the most prolific mathematician in European history, and it is no exaggeration to call18th century the Euler century. Euler's intrinsic purity, like this Euler formula, also communicates almost all mathematical elements in the world in the most concise way. Irrational number e, which is the base of natural logarithm, is hidden in the speed of spacecraft and the spiral of snail.
3. Gravity
Before Newton, people thought it was all in God's hands. After Newton, human beings realized that heaven and earth were running in the law of universal gravitation discovered by Newton. The universe and everything have found a unified law, and physics has achieved the first real unity. Then the mechanistic view of nature represented by Newton occupied a dominant position in the whole natural science field for more than 200 years, forming modern science.