1999, China issues stamps to commemorate Chen Jingrun. Purple Mountain Observatory named a planet "Chen Jingrun Star" to commemorate it. Other related film and television works are named after Chen Jingrun.
Who would have thought that Chen Jingrun's achievements originated from a story?
From 65438 to 0937, diligent Chen Jingrun was admitted to Huaying College in Fuzhou. At this time, during the period of War of Resistance against Japanese Aggression, Professor Shen Yuan, head of the Department of Aeronautical Engineering in Tsinghua University and a doctor studying in Britain, returned to Fujian to attend the funeral, unwilling to stay in his hometown because of the war. When several universities got the news, they all wanted to invite Professor Shen to give lectures, but he refused. As he is an alumnus of Huaying, in order to repay his alma mater, he came to this middle school to teach mathematics to his classmates.
One day, Teacher Shen Yuan told us a story in math class: 200 years ago, a Frenchman discovered an interesting phenomenon: 6=3+3, 8=5+3, 10=5+5, 12=5+7, 28=5+23. Every even number greater than 4 can be expressed as the sum of two odd numbers. Because this conclusion has not been proved, it is still a guess. Euler, a great mathematician, said, "Although I can't prove it, I am sure this conclusion is correct. It is like a beautiful light ring, shining with dazzling brilliance not far in front of us ... "
Chen Jingrun took a keen interest in this wonderful question. In his spare time, he likes reading in the library. He not only read the secondary school counseling books, but also eagerly read the textbooks of mathematics and physics courses in universities, so he got the nickname "bookworm". Interest is the first teacher. It is such a mathematical story that aroused Chen Jingrun's interest and his diligence, thus creating a great mathematician.
1742 On June 7th, the German mathematician Goldbach wrote a letter to the great mathematician Euler, and put forward the conjecture that natural numbers are expressed as the sum of prime numbers. People summarize their correspondence as two points: (1) Every even number not less than 6 is the sum of two odd prime numbers. For example, 6 = 3+3, 8 = 5+3, 100 = 3+97...(2) Every odd number not less than 9 is the sum of three odd prime numbers, for example, 9 = 3+3+3,15 = 3+7+5 ...
The ultimate goal of Goldbach's conjecture is to prove "1+ 1=2".
This is the famous Goldbach conjecture. From 1742 to the present more than 200 years, this problem has attracted countless mathematicians to work hard and achieved many results. Although Goldbach's conjecture has not been finally proved, the mathematical methods produced in the process of proof have promoted the development of mathematics.
In order to solve this problem, it is necessary to test the validity of each natural number. Because there are infinite natural numbers, it is impossible to verify them one by one. So a famous mathematician said that Goldbach conjecture is as difficult as any unsolved mathematical problem. Others compare Goldbach's conjecture to the jewel in the crown of mathematics.
In order to get this pearl, mathematicians used various methods. One is the problem of transforming it into almost prime by screening (the so-called almost prime refers to a natural number whose number of prime factors does not exceed a certain prime), that is, it is proved that every large enough even number is the sum of almost prime numbers whose number of prime factors does not exceed A and B respectively, and it is recorded as (A+B).
Goldbach conjecture is essentially the final proof (1+ 1). Mathematicians have proved that (9+9), (7+7), (6+6), (5+5) ... (1+5), (1+4) and (1+3) have gone through hard work successively. It is only one step away from (1+ 1), but it is a very difficult step. 30 years have passed since 1966, but (1+ 1) is still an unsolved problem.
1966, China mathematician Chen Jingrun announced that he had proved "1+2", and in 1973, he published a paper "Big Even Numbers Represented by the Sum of the Products of One Prime Number and No More than Two Prime Numbers", which caused a sensation in the world. Halberstam, a British mathematician, and Li Xite, a German mathematician, co-authored a monograph on number theory, which originally consisted of ten chapters. After going to press, I saw Chen Jingrun's paper, so I printed the eleventh chapter with the title of "Chen Theorem".
This is a miracle that attracts worldwide attention: a mathematician who lives in a 3-square-meter hut leans against the bed board with a dim kerosene lamp and consumes six sacks of draft paper with a pen, finally conquers "1+2" in the world-famous mathematical puzzle "Goldbach conjecture" and creates "1+66" as the crown jewel of number theory.
Chen Jingrun grew up thin and introverted, and only loved mathematics. Computational math problems occupy most of his time, and boring algebraic equations make him full of happiness. Because of his excellent research on a series of problems in number theory, Hua was attached importance and transferred to the Institute of Mathematics of China Academy of Sciences.
Goldbach conjectures that this world-class mathematical problem that has been unresolved for more than 200 years has attracted the attention of thousands of mathematicians, but few people can really challenge this problem. However, Chen Jingrun took it as his lifelong and unswerving goal.
Chen Jingrun's proof of "1+2" is the latest achievement of "Goldbach conjecture" research.