The old principal shook his head and said: "It's not high-minded, you kid has been hiding it, and you don't show it if you have the ability, it's more low-key than me, the principal, I think this matter is settled, in the future, you will go to the Department of Mathematics of Linhai University, find more exchanges with other teachers, and go to the library to see more, don't fool around outside every day." ”

"If you don't go, can you?" asked Li Hao with a shy face.

"What do you say?" the old headmaster asked with a narrowed look in his eyes.

Li Hao suddenly felt bad, and in a few days, he had to suffer again.

I can't go to class right now, but that doesn't mean I can't stay in school, and I can still go to places like the library and cafeteria.

Leaving the old principal, Li Hao went directly to the library, the library of Linhai University is similar to that of Jiangnan University, although there is no student ID, but the old principal specially prepared a book borrowing certificate, in order to let Li Hao go to the library to study by himself.

Li Hao could only stay in the library to study twin primes, and other books were not attractive to him.

In order to touch twin primes, Li Hao must first learn topology and screening methods, which are world-recognized methods for proving twin primes.

Li Hao studied topology when he was at Jiangnan University, although he was self-taught, he also knew a lot of methods used, and the only thing he needed to understand now was the screening method.

There were a lot of people in the library, and it was already full when Li Hao came.

Finding a book on topology and sifting, he found an empty spot and sat down in a quiet place.

Across from him was a bespectacled girl, with some dandruff and oily hair, dressed in plain fashion, and immersed herself in a book on mathematical theory.

Just at a glance, Li Hao decided that this girl was a scholar, and it was impossible for ordinary girls to do this.

After Li Hao sat down, the other party did not react, as if he had been immersed in the sea of books.

He didn't look bored either, and while reading a book, he wrote down what he needed on a piece of paper.

Twin primes refer to pairs of prime numbers that differ by 2, such as 3 and 5, 5 and 7, 11 and 13, while the twin prime conjecture is a guess that there are an infinite number of pairs of twin primes.

There are two types of outcomes in the world, one is non-estimated and the other is estimated.

However, due to the limitations of the screening method, many people in the world believe that it is difficult to surpass the non-estimated results within the scope of the screening method.

Therefore, it is very difficult for Li Hao to start with the screening method.

It turned out to be very uncomfortable while reading the book, especially since Li Hao had not yet reached that level.

Every time he wrote the last step, he would circle the mistakes of the two steps, and in the end it became more and more difficult to prove.

The girl across from him seemed to be a little tired, took off her glasses and rubbed her eyes, but was also stunned when she found that there was a boy sitting across from him.

When did this guy come?

Didn't you find out for half a day?

Because of her myopia, she couldn't see what Li Hao was writing clearly, so she could only put on her glasses again.

This time, she completely saw what Li Hao wrote, especially the pairs of prime numbers that Li Hao circled on the paper, which made her eyes widen.

Twin primes?!

The boy in front of me is studying twin primes!

This made her suddenly interested, looked at the quiet surroundings, and hurriedly wrote on the paper: "Hello senior, which class are you from?"

She saw that Li Hao was studying twin primes, and thought that Li Hao was a disciple of a certain professor, so she subconsciously thought that Li Hao was her senior.

After writing it, she pushed the note off the table, and then looked at Li Hao with a look of hope.

But Li Hao frowned when he saw the note, he was at a critical time, and the feeling of being suddenly interrupted was very uncomfortable.

Looking up and glancing at the girl opposite, Li Hao wrote on the paper: "It has nothing to do with you." ”

Then he pushed the note out again, and he lowered his head and began to write on the paper again.

When the girl saw the words on the note, she was stunned for a moment, as if she thought that she had disturbed the other party, and hurriedly wrote on the paper again: "I'm sorry, senior, I didn't mean to disturb you." ”

This time, she put the note in front of Li Hao's manuscript paper and did not cover Li Hao's steps.

And Li Hao has no thoughts at all since he was interrupted just now, as if God has closed the door for you and locked the window.

Very aggrieved......

After a while, Li Hao gave up directly, and he had no choice but to give up without the slightest clue.

Looking at the paper in front of him, he looked up at the girl opposite, and the girl was looking at him with her hands folded at the moment, looking apologetically.

Li Hao, who saw this scene, could only sigh, what else could he do with the other party's attitude?

Since you don't have a clue now, let's go to the teachers at Linhai University and ask.

He immediately put the books back in their place, then packed his manuscript paper and left the library.

The girl saw Li Hao leaving and hurriedly chased after him.

At the door of the library, the girl stopped Li Hao and said, "Sorry senior, I really didn't mean to disturb you, I'm really sorry." ”

She apologized very sincerely, obviously knowing that she was wrong.

And Li Hao also waved his hand and said, "It's okay, I don't have a clue anyway, by the way, I'm not your senior." ”

After speaking, he turned around and left, but the girl blocked Li Hao and said, "Ah...... I'm sorry, I don't know if you're not a senior, I see you're studying twin primes, I think you're a disciple of a professor, my name is Chen Sihan, I'm a student majoring in applied mathematics in the Department of Mathematics, I'm a junior this year, and I'm ...... in the library."

Li Hao looked at this talkative female scholar, and her eyelids jumped wildly.

Sure enough, none of the top students are normal people......

In terms of dress alone, this Chen Sihan is already the pinnacle of a scholar.

Can't be provoked...... Leave!

Li Hao directly ignored Chen Sihan's words, and walked towards the teaching building of the Department of Mathematics.

He is now going to ask a teacher in this area to see how far Linhai University's research on twin primes has come.

Just as Li Hao was leaving, Chen Sihan also followed, she seemed to have endless words, and kept talking in Li Hao's ear, from self-introduction to her major, to professional teachers and classmates......

Li Hao felt that there was a mosquito in his ear, buzzing all the time.

"I said can you stop a bit, I still have something to deal with, don't follow me. Li Hao said with a straight face and a look of anger.

Chen Sihan was stunned for a moment, then stretched out his hand and hurriedly covered his mouth, his eyes narrowed into crescent moons, and he shook his head vigorously.

Li Hao was also a little helpless for her, so he could only walk towards the office of the Department of Mathematics by himself.

The head of the Department of Mathematics at Linhai University is called Ge Pingfan, and like his name, he is also a very ordinary teacher, with an ordinary appearance, plain dress, and nothing worthy of attention.

is such an ordinary person, who is actually a well-known mathematical scholar in China, and has won a national award.

He didn't expect Li Hao to find him.

"Li Hao, why are you here?" Ge Pingfan looked at Li Hao and asked with a smile.

"I have a question that I want to trouble you, I don't know if you have time?" Li Hao scratched his head and asked.

Ge Pingfan was also very optimistic about Li Hao, beckoned him to sit aside, and then looked at Chen Sihan.

"Chen Sihan, why are you here, do you have any questions to ask me?"

Hearing his words, Chen Sihan shook his head and looked at Li Hao, and then explained: "I came to apologize to him, but he didn't let me speak, so I had to come along." ”

Apologize? Ge Pingfan looked at Li Hao suspiciously.

"It's not a big deal, it's just that I was disturbed when I was in the library. Li Hao said and took out the manuscript paper from his backpack and handed it over.

Ge Pingfan motioned for Chen Sihan to sit down as well, and then took Li Hao's manuscript paper and looked at it.

When he saw that there were twin primes on the manuscript paper, a gleam flashed in his eyes.

Linhai University does study twin primes, but there are only a few people who actually study them.

He had also done research before, but unfortunately it was too difficult, so he had to give up first and switch to other directions.

Looking at Li Hao's proof process, Ge Pingfan's brows gradually furrowed, and after watching it for about half an hour, he breathed a sigh of relief and looked at Li Hao with a smile.

"I have to say, you're the most gifted student I've ever met. ”

Hearing Ge Pingfan's praise, Li Hao was also a little embarrassed, scratched his head and smiled: "You are joking, where can I compare with a real scholar with half a bucket of water." ”

"Don't be modest here, I'm telling the truth. Ge Pingfan said with a relieved face: "There are many talented people in Linhai University, and Chen Sihan is one of them, but unfortunately there is still a gap with you." ”

When Chen Sihan on the side heard this, his face also changed, and he looked at Li Hao curiously.

She felt the name familiar, but for a moment she couldn't remember who it was.

Li Hao also glanced at Chen Sihan curiously, he really didn't guess wrong, this Chen Sihan is really a female scholar.

Ge Pingfan continued: "There are many people who study twin primes in China, but none of them can be as bold as you, we generally only use one of the topological applications or screening methods to prove, and you kid actually combined these two, and actually succeeded, you are a surprise to the mathematical community." ”

For his praise, Li Hao also didn't know how to answer.

He read some news that twin primes can be proved by topology and filtering, and thought that combining the two should have a certain effect if they complement each other.

I didn't expect it to be.

Chen Sihan's eyes also widened, and he was shocked: "Director Ge, you said that what Li Hao wrote now is correct?"

She didn't believe Li Hao a little, after all, the twin prime conjecture was not a joke, so many people had studied it throughout the ages, but in the end it was all in vain.

Ge Pingfan nodded and explained: "That's right, some people abroad have used it together, but it didn't work, Li Hao can now be said to have opened a new door." ”

Saying that, he looked at Li Hao with more eager eyes, if he could, he wanted Li Hao to transfer to their Linhai University.

Chen Sihan frowned and looked at the manuscript paper, and muttered, "Li Hao? Li Hao...... You can't be the simplified prover of Zhou's guess, right?"