Chapter 35 Thursday

On Thursday, the weather on this day was good, the wind was beautiful, the sky was clear like a piece of blue paper, a few thin white clouds, as if they had been sunburned by the morning sun that was not strong, floating slowly with the wind, the breeze blowing gently, and the warm sun covered the earth.

Such weather, such an early morning, is really refreshing.

Led by Jingrui, everyone strolled through the campus, feeling the autumn breeze, no sadness, no gloom, no desolation, full of a touch of warmth.

Breathing in this fresh air, Jingrui suddenly felt a little emotional, how difficult it was to breathe a breath of fresh air in his previous life. Since the Industrial Revolution, science and technology have continued to develop, but despite the continuous progress of various equipment, pollution is becoming more and more severe, in less than 300 years, human beings have caused pollution and damage to the earth's environment that have not been caused in the previous 3000 years. Although the environment in Kyoto has improved in recent years, the relocation of heavy factories and the restriction of cars are still too bad compared to hundreds of years ago. In contrast, the provincial capital of Kentenu is also a city with tens of millions of people, but the greenery is not bad at all, especially in the college, there are green trees and grass all over, although it is close to late autumn, but it is still vibrant. I'm really not afraid of not knowing the goods, I'm afraid of comparing goods. After a little comparison, I only feel that the environment in Kyoto is a scum with a combat power of only 5. Could it be that the good environment is also one of the reasons for the formation of the crossing trend?

Kyung-seo's thoughts suddenly became weird

The dormitory is not far from the classroom of Class 1 a year, so Jingrui and others came to the classroom very quickly, looked at the time, it was 7:40, and it was not far from the time of class.

As the bell rang at 8 o'clock, the students of Class 1 stopped talking and waited for class.

And the teacher, who had been sitting by the podium for a few minutes, also got up and walked up to the podium, this is an old man with gray hair, but looking at his energetic and energetic appearance, it makes people feel that he is very young, what a crane-haired old man.

"Haha, hello everyone, I'm your math teacher, my name is Mars Aristotle. "Sure enough, this old man, oh no, it was Mars who also spoke in a very brisk tone, not at all like an old man.

"Well, who's the squad leader, stand up and introduce yourself to me. ”

"Well, teacher, I'm the class leader, but only temporarily. Jingrui got up and replied.

"The squad leader is the squad leader, and there are no temporary and non-temporary ones. Mars was slightly puzzled.

"Teacher Mars, our instructor is Sona Saint, I don't know if you know, in short, she has set a rule, and I, the class leader, may not be able to sit firmly. Jing Rui explained slightly.

Mars stiffened visibly when he heard Sona's name, then pulled the corners of his mouth, and then said: "Sosona little Sona, ah, ah, so it is, so it is, child, I understand, it's really hard for you." Saying this, Mars felt that his jaw hurt on the ground.

"But kid, let's introduce yourself first. ”

"Okay, Mr. Mars, my name is Jingrui, I am from the village of Stat in Floshire, and I am the temporary head of Class 1. Jingrui briefly introduced.

"Okay, I know you, sit down. Then, Mars looked up and pondered, muttering, "Woo, it's nerve-wracking, it's nerve-wracking, I forgot to prepare for class." ”

The students sitting in the front row and the students who were good at hearing suddenly felt that their eyes were dark, and I asked them, is there really no problem with such a teacher? As a teacher, I forgot to prepare for class, and this is not the first day of school, it is all Thursday! The school is really not cheating on us?

"Woo, woo, woo," Mars still thought.

"Woo, woo, Jingrui, by the way, Jingrui!" Mars suddenly called out to Jingrui.

"Eh, teacher, what's the matter?" Jingrui got up slightly embarrassed, not knowing what Mars was going to do.

"Well, sit down, sit down, I'm not calling you, I'm thinking about what I'm going to talk about today. Mars watched Jingrui stand up and quickly waved for Jingrui to sit down.

Then Mars cleaned up his mood, and then said: "Speaking of Jingrui, except for Jingrui, I don't know if you have heard of a very popular word in the academic world in the past two years - Jingrui conjecture. ”

Hearing this, Qingwei, Cheng Yuan'er, Mu Geng, Yahad, Dier, and Pete all turned their heads to look at Jingrui, no, not only them, the whole class almost looked at Jingrui, Jingrui shrank his neck slightly, I'll go, don't make too much trouble about this, okay, Jingrui hurriedly played his actor-level acting skills, and said casually: "Eh, what are you looking at me doing, I have flowers on my face? "Just kidding, it's going to be stared at like this all the time and I can't go to class.

Everyone didn't have any special reaction when they looked at Jingrui, and felt that Jingrui's guess probably had nothing to do with Jingrui, it should just be a coincidence, it was a hot mathematical theory, think about Jingrui two years ago was just 10 years old, what does a 10-year-old kid have to do with mathematical theories that affect the world?

Seeing that the class retracted their gaze, Mars was also in a good mood, and began to talk about the Jingrui conjecture: "The Jingrui conjecture can be roughly said to be that any even number greater than 2 can be written as the sum of two prime numbers. It can also be equivalent to any integer greater than 5 can be written as the sum of three prime numbers. Regarding the Jingrui conjecture, it is related to the development of many fields such as the composition of the magic array, the structure of magic technology, and the theory of potion matching, and it may not have any significant impact on all aspects, but its proof process may contain content related to many aspects, if it can be explored, it can be said that the entire talent continent will usher in a period of rapid development of magic technology. I heard that in the past two years, some people have used the magic center to calculate the number within 10 billion digits are completely in line with the setting of the Jingrui conjecture, and it can almost be said that the Jingrui conjecture is correct, but there is still no complete proof method, and we can't draw conclusions, but on the proof of the Jingrui conjecture, a method called the proof of prime numbers has been born, and the prime number is a positive integer with a small number of prime factors. Now N is an even number, although it cannot prove that N is the sum of two prime numbers, it is enough to prove that it can be written as the sum of two prime numbers, that is, N = A + B, where the number of prime factors of A and B is not too much, for example, the number of prime factors does not exceed 10. 'a+b' is used to represent the following proposition: each large even number N can be expressed as A+B, where the number of prime factors of A and B does not exceed a and b, respectively. Obviously, the Jingrui conjecture can be written as '1+1'. Progress in this direction is achieved using the so-called sieve method. Nowadays, many scholars are working on the proof of '9+9'. Let me give you a general introduction."

"Finally, I heard that Jingrui's guess was really proposed by a 10-year-old child. Mars suddenly interjected at the end of the lesson.