A week later!

Song Chengkun went through the procedures for staying at the school, carried a large bag and a small bag, and got on the plane to Zhonghu.

A few hours later, Song Chengkun came out of the airport with his luggage.

Ye Fei waved his hand outside the pick-up hall and said, "What about this!" ”

Song Chengkun stepped forward and said with a smile: "Professor Ye, I'm really embarrassed to let you pick me up, in fact, I don't need to, I can find a place to go by myself, I can go by myself." ”

As he spoke, he unceremoniously handed over the luggage in his hand to Ye Fei.

Ye Fei took his luggage with a smile and said, "I should pick you up, how can I let you go in person, if you get lost, I have to go to the police station to find you, what a trouble!" ”

"You think I'm a three-year-old kid and I'm going to the police station, won't I be able to search on a map?" Song Chengkun glanced at Ye Fei, very speechless.

Ye Fei smiled: "Get in the car!" ”

After speaking, Ye Fei pulled Song Chengkun's luggage, walked to the parking lot, and finally got into a black Mercedes-Benz E.

This car was bought by Ye Fei, and he is worth more than 100 million yuan.

Buying a Mercedes E, it's nothing.

Among the many teachers' luxury cars in the school, Ye Fei's car is relatively low-key.

Most of the university teachers are rich and flowing, or they have good family backgrounds, such as Tan Lingling.

Either they are capable, in addition to school salaries, there are many opportunities to earn extra money, such as Ye Fei.

Ye Fei is not alone in school, as long as he has a little ability, all of them have the opportunity to make extra money.

College teachers never live on school salaries, but on earning extra money.

The school salary is only the basic salary, which accounts for a very small part of the annual income, and most of the income comes from extra money.

Of course, without the platform of the university, there are many fewer opportunities to make extra money.

It is precisely because of the platform of universities that there are many more opportunities to earn extra money.

After getting in the car, Ye Fei drove straight to the blockchain research laboratory of Zhonghu University.

While driving, Ye Fei said: "I'm looking for you, in addition to studying the distribution of prime numbers together." ”

Without waiting for Ye Fei to finish speaking, Song Chengkun shook his head again and again and said, "No, no, no, I'm just coming to see, not studying together." ”

Ye Fei didn't care if he was studying together, you were all here, and said that it wasn't a study together, and the dead duck had a hard mouth.

Ye Fei continued: "Also, my research needs the help of someone like you who has studied prime numbers for many years. ”

"Do you need my help?" Song Chengkun said with a smile.

"Hmm!" Ye Fei nodded.

"Well said, well said." Song Chengkun smiled: "I'll help you take a look!" ”

Song Chengkun regained his self-confidence, although Ye Fei proved the infinite number of twin primes, this problem.

But Ye Fei also has a weaker place than himself in the field of prime numbers.

No, Ye Fei wants to let himself help in the field of prime numbers now.

Ye Fei smiled: "It's not a look, you have to solve my matter, and we have to sign a confidentiality agreement between us, you know these rules!" ”

"Of course!" Song Chengkun said.

It is an industry rule to sign a non-disclosure agreement before joining a study.

Otherwise, you may walk out of the research room, and the research information can leak out at will.

Ye Fei said: "Of course, I also have to follow the rules, let's talk about the price, the research can be completed in December this year, that is, four months later, the price I give you is one million, what do you think?" ”

This is the extra money of a university teacher, Song Chengkun is a third-level professor at Bay Provincial University.

For a person like him, going out to give a speech is forty or fifty thousand.

To do research, you are charged by the hour or by the time.

The research on the asymmetric encryption algorithm ended after four months, and Ye Fei felt that it was cheaper to charge on time.

"It's over in four months?" Song Chengkun looked at Ye Fei in surprise: "Are you sure?" ”

Ye Fei said: "Can I still lie to you?" ”

"I remember that it was less than half a year since you started working on asymmetric encryption algorithms!"

"Hmm!" Ye Fei nodded: "I started my research after attending the Ho Leung Ho Lee Award Ceremony last time." ”

Song Chengkun looked at Ye Fei blankly, and suddenly felt so heartbroken.

Nima, what have you been through for more than three months?

While putting the infinite number of twin primes, this problem is proven.

On the other side, you're not idle, working on asymmetric encryption algorithms.

And the pace of research is still so fast.

After a long time, Song Chengkun said depressedly: "You have to study it, what are you still coming to me for?" ”

Ye Fei said: "This speed is completed in four months with you joining. ”

"Haha......" Song Chengkun laughed and said: "I see, I will definitely help you well and strive to let you complete the research as soon as possible." ”

Song Chengkun regained his self-confidence, and it turned out that with his own help, he could only complete it four months later.

Then it is very important to say that his research on Ye Fei is very important.

Therefore, Ye Fei can't do it without himself.

Song Chengkun asked with a smile: "If you don't have my help, how long can it be completed?" ”

Ye Fei said: "It will be delayed for two months!" ”

The corners of Song Chengkun's mouth instantly stiffened, and then he looked at Ye Fei dumbfounded, and the expression on his face gradually changed from sluggish to painful: "Only delayed for two months? ”

Ye Fei was driving well in front of him, and he didn't notice Song Chengkun's expression, Ye Fei nodded and said, "Yes." ”

Song Chengkun really wanted to slap himself at the moment.

You big shit!

With you two months in advance, without you just two months in delay.

Is two months considered time for a study?

So, it's the same with you and without you.

Song Chengkun said depressedly: "It's only delayed for two months, and you still come to me, can't you complete the research yourself!" ”

Ye Fei said: "Yes, but with you, can't you be two months in advance!" ”

"It's only two months, does that count as time?"

Ye Fei nodded and said: "Why don't you count time, of course count time, two months, I can do a lot of things, a simple math problem, I can basically complete it in one month, and two months can be completed in two months." ”

"For example, the infinite problem of twin primes, which I spent 26 days to complete."

"What? 26 days? Song Chengkun exclaimed.

"That's right!" Ye Fei said: "It's 26 days." ”

Song Chengkun's self-confidence was shattered at the moment.

Song Chengkun spent more than three months researching the infinite number of twin primes, and only found signs of proof of the idea.

Ye Fei succeeded in 26 days.

Song Chengkun helped Ye Fei do research, which could be completed two months in advance.

Without Song Chengkun's help to do the research, it was completed with a delay of two months.

Song Chengkun: "......"

Ye Fei suddenly felt that the whole world was quiet, and Song Chengkun, who was still talking just now, seemed to be silent at the moment.

Ye Fei turned his head to look at Song Chengkun, and said suspiciously, "What's wrong with you?" ”

"It's fine!" Song Chengkun shook his head: "I just feel like a waste." ”

"Don't say that about yourself." Ye Fei smiled: "If you are a waste, most people in the world are waste. ”

Bay Province University is equivalent to the C9 school in the mainland, and the people who are third-level mathematics professors at Bay Province University are all people with excellent IQs.

Such a person is one in a million.

"What about you?" Song Chengkun stared at Ye Fei.

"Uh......" Ye Fei hesitated for a moment and said, "You can't compare with me." ”

Song Chengkun covered his face sadly and stopped living.

A person who has studied prime numbers for nearly twenty years is not as good as someone who has not studied prime numbers much.

After nearly an hour's drive, the car entered the building of the blockchain research laboratory of Zhonghu University.

After parking, Ye Fei said: "I'll take you to meet the people in my research room first, and then arrange your accommodation." ”

"Good!" Song Chengkun smiled and nodded.

For nearly an hour, Song Chengkun adjusted his psychology.

Since it is not as good as Ye Fei, then it is not comparable.

After the two entered the research room, many researchers were doing research, and Ye Fei clapped his hands to attract everyone's attention.

When everyone looked over to them, Ye Fei said: "Everyone, let me introduce you to you, this is Professor Song Chengkun of Bay Province University." ”

"Professor Song Chengkun is a well-known professor of mathematics at Bay Province University, mainly studying primes, and he has been studying prime numbers for nearly 20 years."

"I brought him in, and it was very helpful for our research."

"Everyone is welcome!"

"Papapa......" Everyone applauded warmly, and some people still knew Song Chengkun.

Song Chengkun is relatively famous in prime number circles.

In terms of prime number ability, he is first-class in Xia Kingdom.

Of course, in terms of research ability, there is no comparison with Ye Fei's hanging on the wall.

Song Chengkun smiled on his face at the right time and said: "It's a pleasure to meet you, I hope that in the future, we can work very happily, and I will do my best to work with you to complete the research as soon as possible." ”

There are a total of four research rooms, and Ye Fei took Song Chengkun to the other three research rooms.

After getting to know all his colleagues, Ye Fei arranged a place for Song Chengkun to live.

In Zhonghu University, the most important thing is to live, and Ye Fei arranged him in the classroom apartment, which is where Ye Fei lives.

Ye Fei has never bought a house, and he thinks that maybe he will move out in the future, so he didn't buy a house.

The next day, the blockchain research room, Ye Fei's office!

Ye Fei and Song Chengkun sat in the office, and Ye Fei said, "I'll first tell you about the recent research in our laboratory. ”

Next, Ye Fei talked to Song Chengkun in detail about the research in the laboratory.

After a long time, Ye Fei said: "The research is generally like this. ”

"The problem now is to derive elementary proofs of prime number distributions to aid in the study of cryptographic algorithms."

Song Chengkun was surprised: "You actually want to deduce an asymmetric encryption algorithm from Goldbach's conjecture, this idea is ......."

"What's wrong?" Ye Fei asked.

"It's a real cow!" Song Chengkun gave a thumbs up and said: "Ordinary people don't dare to have this idea, even if they have this idea, they don't dare to try, and even if they try, they will definitely fail." ”

"Goldbach's conjecture is one of the seven major problems in mathematics, and it is no less difficult to derive an asymmetric encryption algorithm from Goldbach's conjecture than you can prove the ABC conjecture!"

Ye Fei nodded and said: "The difficulty is quite high, but if you don't do it, I don't do it, the problem will never be solved." ”

"So, we should be the first to eat crabs."

Song Chengkun said helplessly: "To be honest, I admire your courage, but I can only do my best to help you, I can't guarantee whether I can succeed." ”

"Do your best to obey the destiny of heaven."

"You can't blame me if it doesn't work out."

Ye Fei smiled: "I definitely won't blame you if you don't succeed, this can only mean that the ability of the two of us is not enough." ”

Song Chengkun nodded and said, "When will we start?" ”

Ye Fei said: "Just now!" ”

"Yes!"

Ye Feidao: "Let's first study the previous people's research on the distribution of prime numbers. ”

"Good!"

The prime distribution was discovered in 300 BC and proposed in 1859.

In 1859, Riemann introduced an important function by treating s in Euler's identities as complex variables.

ζ(s)=∞∑n=1(n^-s)

Here, Riemann began to use the theory of complex variable functions to study the problems of number theory, which pointed out the direction for the future study of π (x).

In 1986, Hadama and Poussin independently proved the prime number theorem.

As a result, mathematicians are also interested in the distribution of prime numbers on some special sequences in addition to the distribution of prime numbers on natural sets.

In 1953, Piatsky Shapiro studied the problem of prime number distribution on a number series, made some proofs, and gave a more concise proof of the prime number distribution.

Time passed unconsciously, 62 years came to 2015.

In the past 62 years, mathematicians have continued to study the distribution of prime numbers, and continue to advance the research to the formula of the distribution of prime numbers.

Of course, there is still a long way to go before success.

In 2015, Guo studied the distribution of Piatsky Shapiro-type primes on a beating sequence.

In 2017, Köllner proved that the proofs of Podelle, Luca, Morey and Shpalinski, among others, were valid through Bernoulli's polynomial.

And the constant k=2.

What Ye Fei wants to study now is whether he can derive the elementary proof of the prime number distribution.

The so-called elementary proof is one of the studies on the distribution of prime numbers, and it is the key to unlock the final proof of the distribution of prime numbers.

The following proof can only be made if you have a primary certificate.

Song Chengkun said: "According to my years of research on prime numbers, if you want to prove the elementary proof of the distribution of prime numbers, then you should look for the Abelian group. ”

"The abelian group is an important research object in the theory of combinatorial numbers, and the study of the representation function should be like this."

Song Chengkun said as he picked up the pen on the table and wrote a tirade on the paper.

After writing, Song Chengkun looked at Ye Fei, ready to accept his praise.

After Ye Fei finished reading what Song Chengkun wrote, he frowned and thought, "Is your proof cumbersome?" ”

"Huh?" Song Chengkun was stunned for a moment.

Ye Feidao: "If h is a given integer that is not less than 2, G is a finite abelian group, and A is a non-empty subset of G. ”

"Look!"

Ye Fei said, writing down some formulas on the paper.

"Wouldn't it be more concise if it were deduced this way?"

Song Chengkun nodded after reading it, surprised in his heart: "It's really more concise." ”

"This ......" Song Chengkun looked up at Ye Fei and asked, "Aren't you not too deep in the study of prime numbers?" ”

"yes!" Ye Fei said: "I am based on your derivation, and then simplified!" ”

"Can it still be like this?" Song Chengkun looked at Ye Fei dumbfounded.

Song Chengkun said in his heart: "How does this Ye Fei's brain grow, can this be deduced?" ”

Ye Fei said: "Let's continue!" ”

Half a month later!

Ye Feidao: "So, let x be the eigenfunction of set A......"

"With this proof, the primary proof can be successfully derived."

Song Chengkun nodded and said, "Yes!" ”

"That's it!" Ye Fei put down his pen and said: "The elementary proof of the prime number distribution has been proven, so we can continue to study the encryption algorithm." ”

Song Chengkun said tentatively: "Ye Fei, why don't we continue to study prime numbers?" ”

Ye Fei shook his head and said: "This has been studied, what else is being studied!" ”

"It's not!" Song Chengkun said: "There are still many fields of prime numbers that can be studied, you see, if we cooperate, we can study more prime problems." ”

At this moment, Song Chengkun tasted the sweetness, and he found that studying with Ye Fei was too fragrant.

Ye Fei's brain is too good, as long as he has just raised many problems and found a solution to the problem.

Ye Fei quickly solved the problem, and simplified it more than his own proof ideas.

Song Chengkun said in his heart: "With Ye Fei's ability, if I cooperate with him, in addition to the seven major problems of mathematics, other prime number problems can be proven." ”

Thinking of this, Song Chengkun's heart was hot.

Ye Fei shook his head and said, "There's no need, the current research is enough." ”

Song Chengkun said anxiously: "Why is it not necessary?" I think it's necessary, you see, you have brains, I have ideas, and we can prove more prime puzzles together. ”

Ye Fei looked at Song Chengkun suspiciously.

"What's wrong?" Song Chengkun was uncomfortable when Ye Fei looked at him.

Ye Fei said: "I don't think your ideas are very reliable, many of your ideas have been simplified by me in the past half month." ”

"You ......" Song Chengkun's face was full of grievances.

"Stop talking nonsense." Ye Feidao: "Since the prime distribution is solved, let's start the research on asymmetric encryption!" ”

Ye Fei didn't want to have too deep research in the field of prime numbers, otherwise he would fall into it and he might not be able to get out.

"Hey......" Song Chengkun saw that Ye Fei had made up his mind, and sighed helplessly in his heart.

"Heaven does not give birth to me Song Chengkun, tens of thousands of years are like long nights!"

(End of chapter)