1742, the mathematician Goldbach wrote a letter to another mathematician Euler. There is a proof in the letter that "any even number greater than 2 can be written as the sum of two prime numbers". For example, 4 can be written as 2+2 and 8 can be written as 3+5.
A prime number is a number greater than 1, and it cannot be divisible by other numbers except 1 and itself. For example, 2, 3, 5, 7, 1 1 are prime numbers.
Chen Jingrun's proof of 1+2 shows that a big even number can be expressed as the sum of the products of a prime number and no more than two prime numbers, which is the latest proof of Goldbach's conjecture by human distance so far. Since then, Chen Jingrun has devoted himself to tackling key problems and proved that 1+ 1 did not succeed until his death.
In fact, Goldbach conjecture is a very simple conjecture in mathematics. Anyone can understand the meaning of Goldbach conjecture, but it seems that such a simple conjecture has puzzled mathematicians for more than two centuries.
The development of mathematics can't be seen in a short time. /kloc-Riemann geometry in the mid-9th century played a great role in the general theory of relativity in the early 20th century, which Riemann had never expected before. Goldbach's conjecture, once proved, is likely to give birth to a new branch of mathematics, which may provide support for new physical theories, and ultimately completely change human cognition of the world like general relativity.