Goldbach, a German mathematician, once wrote to Euler and put forward a conjecture that any integer greater than or equal to 6 can be expressed as the sum of three prime numbers. Euler replied that he thought this assertion was correct, and pointed out that in order to solve this problem, it is only necessary to prove that no even number greater than 2 is the sum of two prime numbers, but Euler could not prove this proposition, which is called Goldbach conjecture and abbreviated as 1+ 1.
In the 1920s, BROWN Brown, a Norwegian mathematician, used the ancient screening method to prove that no fully played even number is the product of nine prime numbers plus the product of nine prime numbers.
Remember to do 9+9.
1958 China mathematician Wang proved 2+3 1962 Pan Chengdong proved 1+5 In the same year, Wang He and Pan Chengdong proved 1+4.
1966 In May, Chen Jingrun announced in Science Bulletin that it had proved 1+2.
1973 published the paper "A large prime number expresses the sum of the multiplication of a prime number and no more than two prime numbers", which is recognized by the world as Chen's theorem, only one step away from Goldbach's conjecture.
The specific story is unclear, but 1+ 1=2 has several explanations.
1. Goldbach conjecture: Every even number greater than 2 is the sum of two prime numbers, such as 6=3+3, 8=3+5, 10=5+5=3+7 and so on.
Chen Jingrun, a famous mathematician in China, proved that a big prime number can be expressed as the sum of two numbers, one of which is the product of two prime numbers, commonly known as 1+2. Obviously, the conclusion of Goldbach conjecture is 1+ 1. So Chen Jingrun's result is only one step away from Goldbach's conjecture, which is also the most difficult step.
Second, addition principle. It can be proved that 2 is the only successor of 1.
The assumptions of general addition are as follows: y+= y+ 1, (x+y)+= (x+)+y.
It can be proved that 1+ 1=2.
Question 2: Why one plus one equals two 1+ 1 Why equals two is Goldbach's conjecture. At present, no mathematician in the world has worked it out. More than 20 years ago, Chen Jingrun, a student of China's famous mathematician Hua, calculated and proved that 1+2 is equal to 3. No one can surpass 10 at present, Mr. Chen Jingrun.
Question 3: Why does one plus one equal two? According to piano's axiom of natural numbers, 1.0 belongs to N.2. If X belongs to N, then X has only one successor X' .3. For any X belonging to N, all X' s are not equal to 0.4. For any x, y belongs to n, if x is not equal to y, then x' is not equal to. And for any X belonging to M, X' belongs to M, then M = N. According to the above axiom, the successor of 0 is 1, and the successor of 1 is 2, that is, 0'= 1. 1'=2. According to the definition of addition, there is a unique binary operation +:nxn→ n satisfies: x+0=x and x+y'=(x+y)'. Replace x+y'=(x+y)' with y=0 to get: x+0' = (. X+0=x and 0'= 1: x+ 1=x' Substitute x= 1 into the above formula: 1+ 1' and then get 1'=2. 1+ 1=2. Modern Chinese dictionaries define 2 as 1+ 1. Result 2 is a language, representing the state after adding 1 and 1. Its essence is 1+ 1. mathmatics The state in which an object and the same object are put together is defined as 2. For example, the sum of 1 unit water and 1 unit water phase is called 2 units water. Addition is the operation to study the consistency of the object. For example, the sum of 1 male and 1 female should be two people, because both of them are human, so it is impossible to simply use the addition operation for men and women. Because such addition is meaningless at all, it also gives us a message: the actual objects are diverse and rich, and mathematics is only a summary of some characteristics of these objects. In mathematics, this operation of adding 1 male and 1 female only extracts the quantitative characteristics of the whole person and ignores other information, so only two people can draw conclusions. In short, addition is.