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How does Chen Jingrun prove that 1+ 1 is not equal to 2?
"1+ 1" is just a short name, not one plus one in the arithmetic sense. Also called Goldbach conjecture: Any even number greater than 2 can be written as the sum of two prime numbers.

1966 in may, Chen Jingrun published a paper "expressing a big even number as the sum of the products of a prime number and no more than two prime numbers". The publication of the paper has been highly valued and praised by the world mathematics community and famous mathematicians. British mathematician Haberstein and German mathematician Li Xite wrote Chen Jingrun's paper into a math book called "Chen Theorem".

Extended data

The proposition of Goldbach conjecture;

1On June 7, 742, Goldbach wrote to Euler and put forward the famous Goldbach conjecture: take any odd number, such as 77, it can be written as the sum of three prime numbers, that is, 77 = 53+17+7; Any odd number, such as 46 1, can be expressed as 46 1=449+7+5, which is also the sum of three prime numbers. 46 1 can also be written as 257+ 199+5, which is still the sum of three prime numbers.

There are many examples, that is, it is found that "any odd number greater than 5 is the sum of three prime numbers."

1742 On June 30th, Euler wrote back to Goldbach. This proposition seems correct, but he can't give a strict proof. At the same time, Euler put forward another proposition: any even number greater than 2 is the sum of two prime numbers. But he also failed to prove this proposition.

Hownet-table big even number is the sum of the products of a prime number and no more than two prime numbers.

Baidu encyclopedia-Goldbach conjecture