One of the most difficult mathematical problems in the world today is Goldbach conjecture.

It can be inferred from Goldbach's conjecture about even numbers that any odd number greater than 7 can be expressed as the sum of three odd prime numbers. The latter is called "weak Goldbach conjecture" or "Goldbach conjecture on odd numbers".

If the Goldbach conjecture about even numbers is right, then the Goldbach conjecture about odd numbers will also be right. In May 20 13, Harold Horovgott, a researcher at Paris Teachers College, published two papers, announcing that the weak Goldbach conjecture was completely proved.

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Hua was the first mathematician in China who engaged in Goldbach conjecture. From 1936 to 1938, he went to England to study, studied number theory under Hardy, and began to study Goldbach conjecture, which almost verified all even conjectures.

From 65438 to 0950, after returning from the United States, Hua organized a seminar on number theory at the Institute of Mathematics of China Academy of Sciences, and chose Goldbach conjecture as the topic of discussion. Wang Yuan, Pan Chengdong, Chen Jingrun and other students who attended the seminar made good achievements in proving Goldbach's conjecture.

1956, Wang Yuan proved "3+4"; In the same year, the mathematician A.V. Noguera Dov of the former Soviet Union proved "3+3"; 1957, Wang Yuan proved "2+3"; Pan chengdong proved "1+5" in 1962.

Baidu encyclopedia-Goldbach conjecture