The lobby of clincia hotel.

Pass the passport to the front desk staff in charge of check-in, take a look at professor feverman in the direction of the door, and suddenly a chat voice asked.

"The security level here seems a little unusual In addition to the International Congress of mathematicians, what other activities are there here? "

"No, sir," explained the receptionist patiently after registering the check-in information and returning his passport to Professor feverman, "the highest level meeting in 30 days is the international mathematician conference to be held in two days. During the conference, the hotel will provide the highest standard service for the conference. I wish you the best I'm in a good mood for the next week. "

“…… Thank you. "

With his passport folded, Professor feverman nodded to the front desk with a smile on his face, and then walked over to Professor deline, who was standing by looking at his watch.

"He did come! I said that he would not miss such an interesting meeting! "

He said excitedly. Professor feverman's face was hung with a thrill that didn't match his age. It was like watching a ball game that didn't score the first goal until the last ten minutes. He said excitedly that he had said countless times along the way, "I don't know where his research has gone. It's really looking forward to it!"

looked at his old friend without expression. He was still preparing to Tucao, and he make complaints about Deligne's movements.

"You didn't read his paper on the official website?"

Feverman: look, what's the matter

Deline: "then why do you ask such a question? If he has made any new achievements, you will see them in that paper. If not, then not, I don't know what you're looking forward to. "

Feffman: "because intuition tells me that his research results in this year are definitely not just that."

Professor deline's eyebrows were raised.

"So you know him well?"

There was a hint of the no malice in tone, just as most Princeton professors, more or less, had a little Princeton arrogance.

But I don't know if I didn't hear it, or I was used to the old friend's character, so I didn't pay attention at all, Professor feverman just nodded his head and said with a confident smile.

"Of course, after all, we have worked together. I still have this confidence."

Hearing his old friend's confident speech, deline said with a faint smile.

"Then you must be disappointed because of your overconfidence. I have noticed all his papers published in the past year. Quasi Riemannian conjecture and hyperelliptic curve method are his only research results on Riemannian zeta function. Later, he even went to study economics with Krugman, as if it was called L-Z model It's something like that. "

Generally speaking, the research direction of a scholar can be found in his recently published papers.

From the end of last year, or the beginning of this year, the Sullivan conjecture of manifold classification discussed in differential topology, and the L-Z model in economics, no matter what research results are, have nothing to do with Riemannian zeta function.

No matter how optimistic he is, Professor deline can't imagine that there is still a little possibility in this half year. He is still studying the proposition related to Riemann's conjecture, rather than having chosen to give up

To be honest, deline was a little disappointed with the result.

His disappointment did not come from the achievements of the land boat. After all, as far as the achievements of the land boat are concerned, they are quite arrogant and can't be faulted at all.

However, this is only for ordinary people.

For a scholar like him, only when he really takes off the crown standing on the Mount Everest, and solves the problems that plague the vast majority of scholars in the world, can his academic achievements go further.

Therefore, such fruitful results have been achieved in the research of internal conjecture, but in the end, he chose to give up.

If even he can't solve this problem, maybe this conjecture can only be solved by a scholar who is more talented than him and whose intuition in mathematics is more acute until the end of the century

Some of his concerns were sensed in Professor deline's expression, but Professor feverman just smiled lightly and said in a relaxed tone.

"I think you're worried."

The eyebrows went up and down, Professor deline said, doubtfully.

"Oh? Do you know what I'm worried about? "

Feverman: "of course, after all, we have cooperated more than once. You are always so confident in your analysis, but you have to admit that sometimes when people care too much about a thing, their vision is often narrow.""You mean I'm narrow?"

"Yes, especially in the way of looking at problems, have you not considered this possibility, perhaps because he has found the connection we have not found in these problems? This is not uncommon. "

To reach professor feverman's words, Professor deline said pointedly, "but this possibility is very small. I have studied several of his papers carefully. It's not easy to say outside of mathematics, but as far as mathematics itself is concerned, the mathematical methods used in it have no great significance for the study of Riemannian Zeta function, and even several papers count each other There is no linear or progressive relationship in the academic sense. "

Professor feverman: "maybe it's just that we can't see It's no use saying more. Do you want to make a bet? "

Professor deline frowned. "What's the bet?"

Professor feffman said with a confident smile, "I bet his research results are not only those at the beginning of the year, but also those of Riemann conjecture."

"Otherwise..."

"He will not arrange his sixty minute report meeting for the last one before the closing ceremony."

……

The two old men in front of the elevator are still debating whether the land boat is still studying the question of Riemann conjecture. The topic of the land boat and Schultz sitting on the taxi going to the suburb of St. Petersburg is just around Riemann conjecture.

“…… You haven't made any progress in the past six months? "

"Maybe it's not just half a year, maybe it's half a year," said Lu Zhou with a helpless expression on his face, leaning against the back seat of the taxi, shaking his head. "I tried to improve the hyperelliptic curve analysis method, and tried to find the answer from the group construction theory, but it still didn't help. I even have some terrible thoughts from time to time. Maybe Riemann's guess is right, but it can't be proved. "

"It's not just you, but I think you can have a little bit more fun," Schulz continued, patting the shoulder of the boat. "At least, you can create the excellent mathematical tool of hyperelliptic curve analysis, and even prove the overwhelming quasi Riemann conjecture of a century. You are better than most people."

"But it doesn't make sense to me," Lu said with a sigh. "I believe you should be able to understand this feeling."

Schulz: No, I can't, thank you

Lu Zhou: "...?"

After nearly 40 minutes' drive, the taxi finally arrived in the suburb of St. Petersburg, and the nearby buildings gradually returned from the bustle and prosperity to the simplicity.

According to the taxi driver, this area is a famous mathematical holy land. The stepclov Institute of mathematics is located on this ancient stone step road, and a mathematician who refused the fields prize also lives nearby.

At the same time, the fontenka canal, which runs through the center of St. Petersburg, and the stone brick road, street lamp and bench beside the river, are exactly where the hero and heroine meet in Dostoevsky's novel white night.

After getting off the bus, Schulz took a boat to the nearby residential area.

Most of the houses in the neighborhood are similar to the single apartments in China, which are very suitable for young people to live in. However, it's hard to say how many young people want to live in such remote suburbs.

After a long walk behind Lu Zhou and Shultz, Wang Peng suddenly said.

“…… You've made a turn here. "

Hearing this, Schultz's face showed a helpless smile and stopped to grasp the long hair which was scattered behind his head.

"In fact, it was a long time ago that I came here last time. This kind of apartment building with dense windows is very troublesome. If I don't come here often, I don't remember where I live..." Seeing the expression on Lu Zhou's face gradually become speechless, Schultz stopped talking and said with an embarrassed cough, "I'd better ask someone."

Schulz has a picture of Perelman in his mobile phone, but it doesn't matter. Google can easily find it.

It has to be said that people are handsome or have some advantages. No matter men, women, old and young, in front of the sunshine smile, the vast majority of people will be very enthusiastic to help after hearing his request.

As for being poor

There are benefits, of course.

At least in seclusion, don't worry too much about being disturbed.

"Do you know this man?"

Staring at the photo in Schulz's mobile phone, the Russian girl, who had a brilliant smile at first, suddenly frowned with a little disgust.

"Who is this? Terrorists? Or what kind of action artist? "

It's no wonder that she will show a look of disgust. After all, the image of the man in the picture is really not flattering.

His beards were full of chin, his curly hair was thin and drooping like dog's tail grass. Although it was similar to Schulz's hair, it showed two different styles.It's like a plaid shirt. Some people can wear the feeling of an idol, but some people are like procedural apes.

With a sigh, Schultz said with some difficulty, "I'm sorry, I'll go and ask."

The Russian girl smiled and said, "good luck, but I think it's better for you to give up. I haven't seen this person for two years."

After a round of questioning, no one knew this picture.

Occasionally, although several people recognized him as a famous mathematician and had been on the news, only a few people who recognized him shook their heads when they heard that he lived nearby.

Not to deny the possibility that he lives here.

It's just pure. There's no impression of what I've seen.

When the land boat began to wonder if the recluse had moved, an old man finally recognized the picture in Schulz's hand, and he was familiar with his appearance, and touched his chin.

"I know him. He used to work in the SLOV Institute of mathematics. He is a famous mathematician..."

Land boat immediately: "how long ago?"

The old man's mouth gave a dry laugh, as if remembering something. "When I was a doorman at the Czechoslovakia Institute of mathematics about ten years ago, I often watched him go to work in a worn jeans and shirt. In addition to being a mathematician, this guy is also one of the top two weirdos in the Research Institute. "

Lu Zhou: "..."

Ten years ago

He was in high school then.

Is it such a distant thing to say?

Then the question of the boat, Schulz continued, "do you know where he lives?"

"If he didn't move or die, he would probably live there," the old man continued, pointing to an apartment building next to him. "I only know which one he lives in, but where is it? You'd better ask him from his neighbor."

Seeing the direction that the old man pointed to, Schulz and the boat were relieved, and their faces were grateful.

"Thank you! A great help. "

After that, Shultz took the boat and Wang Peng and walked along the direction pointed by the old man.

Soon arrived downstairs, in the boat and Schultz to discuss, from the floor began to inquire, happened to see two foreign faces are also standing at the entrance of the apartment building.

What's more, one of them knows the land boat.

It is Professor Paul Krugman who he met in Shanghai some time ago

The two men, apparently unaware of him, were standing in front of the entrance to the apartment building, muttering.

"I wonder if we've gone wrong," Albert muttered, looking at the apartment building in front of him. "Is this like a seclusion?"

"No mistake, this is the address given to me by the Secretary General of IMU." Looking at the note again and confirming the address, Krugman said in a positive tone, "no matter how I don't know the wrong way."

Albert continued, "but what if he doesn't want to open the door for us? If he doesn't open the door, we can't even be sure whether he's in or not. "

Krugman: "you don't know him. Although he seems to be a hard guy to approach, if you ask him some math questions, he will answer you very patiently. His attitude is amazing."

Albert raised his eyebrows and said, "have you been in contact with him?"

"No, but I know a beautiful lady who used to work at the SLOV Institute of mathematics in Czechoslovakia. That's what she told me," continued dundayton Krugman. "Listen, my friend, we can't be discouraged. If there is any good old man who can help us besides the arrogant Princeton, it's only here. "

Albert sighed and murmured, "in fact, I'm inclined to cooperate with Professor Lu. His Lu Bewley model and LZ model are masterpieces, especially the research idea of analyzing macroeconomics through calculation, which just doesn't agree with my research!"

"Don't think about it. I'd like to invite faltins if I can, but is it possible? I saw chatter without stop at the beginning of the year, and I was obviously a young man. Sometimes the guy was stubborn than the old men in Princeton, let alone our plan. "

was just listening to Krugman make complaints about his boat when he was chatting with his fellow companions.

"I really want to hear my name, and it seems that I'm still speaking ill of you."

The two people who were talking about each other were startled by the sudden sound.

Krugman, in particular, jumped to the side like a ghost, looked at the boat and said.

"Where the hell did you come from?""I came to St. Petersburg to attend the IMU conference," answered the question truthfully, and then Lu Zhou took a look at Schulz beside him. "Just as this gentleman invited me to visit his old friend, I came here."

After staring at Schulz for a while, he didn't recognize the young man, Professor Krugman said with a frown.

"You are..."

"Schulz," he said, extending his right hand and shaking hands with the two old men respectively. Schulz continued with a smile and a nod, "nice to meet them."

“…… Krugman, Professor of economics at Princeton University, next to me is Albert Laszlo barabbasi, a physicist whose novels are more famous than his knowledge. "

"Hey, wait a minute. What is a novel more famous than learning? You old man, you are sure you are not blind -- "

ignore Albert who is protesting beside himself, look at Professor Krugman of Schulz, and continue with bright eyes," you and Perelman are very familiar? "

Hearing this question, Schulz's expression became a little more subtle, shrugged and said.

"I think I should be familiar with him, but I don't know what he thinks of our friendship - "br >

" what are you doing here? Have a party? "

A sudden voice from the side interrupted Schultz in the middle.

Just like what happened to Krugman and Albert just now, I saw a tall and burly man in shabby jeans and shirt, with two plastic bags filled with cheap food materials in his hand. I don't know when he started to walk beside the group.

It has to be said that his untidy dress and sense of existence are really low enough. No one is aware of his existence when he comes to such a close place.

But when he was found, Professor Krugman immediately smiled and held out his right hand.

"Hello, dear Professor Perelman This is Krugman. I made an appointment with you in the mail. "

"I'm not a professor for a long time," murmured Perelman in Russian. He glanced over several people and stopped on the face of the boat.

After a while, he spoke abruptly.

"Are you a boat?"

"It's just me," Lu Zhou nodded, friendly, "nice to meet you."

"Me too," though he wanted to raise his arms and shake hands with the boat, Perelman had to give up after shrugging.

“…… If you have something to say in the house, you will block the passage. "

Before Shultz and Lu Zhou could speak, Professor Krugman quickly agreed with a bright smile on his face.

"Thank you for your invitation, and I think it's better to say it in the room."

Instead of looking at Professor Krugman, Perelman's eyes swept over several people's faces in turn, and finally stared at Wang Peng for a while.

"You don't look like a scholar, or you come with problems."

That tone of voice, how to see is not very like welcome.

Wang Peng nodded his head, ready to explain the nature of his work, but was interrupted by a slight cough from Lu Zhou.

"You can wait for me here for a while. I'll be down soon."

The expression on his face was a little hesitant, but after a look at Perelman's face, Wang Peng finally nodded his head.

"OK."

"Call me if you have anything."

This so-called call is not the kind of number dialing, but the alarm device triggered by key words set by Lu Zhou on his mobile phone.

Seeing the worried expression on his face, Lu Zhou smiled and clapped his arm.

"It's right to be careful, but don't be too nervous."

"Wait for me here. I'll be down in a minute."

After that, a group of people left Wang Peng in place and walked upstairs.

-

(there's something in reality. I'm not busy. I won't be divided into chapters today. Although there is only one chapter, it is the same as the two chapters