Great Country Academician

In the auditorium, the report will continue.

On the podium, Xu Chuan accelerated his explanation.

The staged proof result paper of the NS equation has more than two hundred pages.

Although most of them are citations and calculation inferences, there are also many key proof processes, and these things need to be explained in the report meeting.

If you don't seize the time to increase the speed of explanation, I'm afraid I can't finish it in one morning.

As Xu Chuan began to gradually speed up his explanation, in the auditorium, many scholars who came to listen to the report also stared at the podium attentively.

Papers and explanations are two concepts after all. Even for those top experts in the front row, even if they have read and understood the proof papers, they still have a lot to gain from Xu Chuan's explanations.

In the auditorium, Zhang Wei, Xu Chenyang, and Yun Zhiwei, the golden generation of Peking University, sat together, listening to the report on the stage seriously, just like listening to lectures in class more than ten years ago.

After sketching out a knowledge point in the notebook in his hand, Zhang Wei suddenly sighed.

Xu Chenyang and Yun Zhiwei at the side cast doubtful glances.

"I used to think that I also had hope, but I didn't expect to find out today that the gap is so far away." Zhang Wei said something nonsensical, and then silently stared at the figure on the stage.

It was a nonsensical remark, but as friends for many years, Xu Chenyang and Yun Zhiwei knew exactly what Zhang Wei was talking about.

The three of them are known as the golden generation of Peking University, but Zhang Wei is undoubtedly the strongest.

If Zhang Wei felt that he was so far away from that person's medal, let alone them.

Sure enough, only the strong among the strong can win the Fields Medal.

On stage, after nearly two hours passed, Xu Chuan finally started to finish.

When the last PPT manuscript caught the audience's eyes, there was no need for him to make other explanations.

"...Based on the above, the derivation of the NS equation is over."

"And it is predictable that, given a finite space, when the initial value is infinitely smooth, the three-dimensional incompressible Navier-Stokes equation smooth solution exists!"

"Of course, whether the solution of the three-dimensional incompressible Navier-Stokes equation exists and is smooth in infinite space is still a mystery, which requires us to pay more efforts and sweat."

"But at least, for now, we have successfully launched a charge horn to this majestic peak, and climbed a long journey forward."

"I hope that one day in the future, we can stand on the top of the mountain and get a complete answer!"

Xu Chuan's words were clearly transmitted from the stage to every corner of the audience.

The moment the sound fell, everyone in the auditorium couldn't help standing up, and the warm applause came like a tide, deafening like thunder, and as persistent as the sound of drums.

In the front row of the auditorium, Fefferman, who had rushed over from Princeton, had a smile on his face.

As he had seen earlier, the phased results of the NS equations had been confirmed.

On the other side, Zhang Wei from Peking University also stood up and applauded.

Last year, he took the person in front of him as his goal, hoping to catch up with him one day in the future.

But now it seems that this hope is quite slim.

In other words, it's not that he's not strong enough, it's just that his opponent is too strong.

This is a difficult problem that may take a whole century for the mathematical community to solve, and may not even be solved.

As for the other party, one has been completely solved, and the other has been solved more than half, and the only thing left is to push it into the infinite three-dimensional space.

Perhaps, the Fields Medal will be awarded twice because of him?

After all, no one in history has ever solved two millennium problems, if he could.

Of course, for the person standing on the stage today, even the glory of the Fields Medal will be eclipsed in front of him.

In other words, the Fields Medal is proud to have his name on it.

Just as the Nobel Prize has the honor of having the name Einstein.

The warm applause lasted for more than half a minute in the auditorium before subsiding slightly.

Waiting for the applause to slow down, Xu Chuan left the podium, stood on the edge of the podium, and bowed slightly to the audience to express his gratitude.

Although the report on the staged results of the NS equation has been explained, the report meeting has not ended yet.

The next part is the key to the report.

In a report meeting, even if the speaker's explanation is excellent, there will still inevitably be doubts.

In the questioning session, it is his duty as a reporter to answer all the questions raised by his peers.

Whether he can successfully answer all the voices of doubt will also determine whether his thesis can finally be recognized by the entire academic community.

In addition, of course, there is the all-important peer review.

Waiting for everyone to take their seats again, Xu Chuan then said: "Next is the time for questions. If you have anything you don't understand about my thesis or the report just now, you are welcome to ask. I will do my best to answer."

After the words fell, some audience members raised their hands.

Xu Chuan glanced around and saw many acquaintances, from Tao Zhexuan to Qiu Chengtong, to Martin Haier, to Artur Avila

For the Fields Medal winner alone, there are full double digits in the audience.

Of course, this is also related to NS equations. NS equations belong to the field of partial differential equations, and partial differential equations are now a framework, and everything can be put into it. No matter what analysis you do, it can be regarded as partial differential equations in the end.

Or it can be said that almost everyone who studies mathematics has been exposed to and understands partial differential equations, but the depth is different.

The time spent on the questioning session and the number of people asking questions were much more than Xu Chuan imagined.

Not only the masters in the field of partial differential equations, but also many masters in other mathematics fields raised their hands.

In addition, many scholars in the physics world also raised their hands to ask questions and express their doubts.

Xu Chuan answered the questions raised by these bigwigs one by one.

But Naihe had too many people asking questions. Until 12:30 noon, there were still people raising their hands in an endless stream.

Backstage, Nantah University President Liu Gaojun waited anxiously. Since eleven o'clock, the administrative staff in charge of lunch had come to ask questions again and again.

But the questioning session at the front desk hadn't been completed yet, so the backstage had to wait patiently.

"Principal, it's already half past twelve here."

Backstage, the administrative staff in charge of lunch came over again to urge them. After all, it was already noon, and eating was a big event.

Liu Gaojun nodded, took a deep breath, and said, "I see. Get ready on your side, and I'll go up here to communicate with Professor Xu."

It was half past twelve, there was no other way, even if the question session was postponed, it was time to eat.

After all, if you don’t eat something to fill your stomach, what should you do if someone is hungry and suffers from hypoglycemia?

Thinking about it, he ran up to the stage to discuss with Xu Chuan in a low voice, suggesting to postpone the unfinished questions until the afternoon.

Xu Chuan nodded and agreed to the suggestion.

Not only the audience and scholars in the audience, he also had to take a break.

From 8:30 in the morning to 12:30, he has stood on the stage for more than four hours.

After discussing the proposal, Liu Gaojun took over the stage from Xu Chuan, quickly announced an intermission, and invited everyone to the restaurant for dinner.

Xu Chuan slipped away from the backstage, avoiding the media reporters squatting outside.

Although the interview is unavoidable, we can talk about it later if possible.

Come here once now, and I will definitely come again after the question session in the afternoon, please. So this kind of thing, as little as possible.

While science does require a certain level of exposure, at his level, it doesn't matter.

Moreover, there was a Q\u0026A session in the afternoon. His time was precious, so he hurried to eat something and then took a rest. There was really not much time wasted on these media reporters.

If you want to interview something, you have to wait until the report meeting is completed.

It was the first time to hold this kind of world-class report meeting. NTU still adopted the self-service form commonly used in international report meetings, so that meals and exchanges can be balanced.

In the restaurant of the hotel, Xu Chuan picked out some food with a plate in his hand and found a corner to sit down in a low-key manner.

But not long after he sat down, a sharp-eyed scholar noticed him.

After all, he is the protagonist this year, and the dazzling light is extremely eye-catching even if he is sitting in a corner.

"Professor Xu, your report just now was really wonderful! It was perfect!"

In the corner, a young scholar who noticed this side quickly walked over with a plate, and greeted Xu Chuan with a smile on his face.

Hearing the voice, Xu Chuan raised his head and responded with a polite smile: "Thank you. Who are you?"

"Gasepe Lopez, currently studying with William Timothy Gowers."

The young man quickly reported his name, and then said: "Professor Gowers told you that he is currently busy with some things, and I am sorry that he cannot come to the exchange meeting, although he really wants to."

Hearing this familiar name, an elegant and handsome old man immediately appeared in Xu Chuan's mind. He was the one who reviewed the proof paper of the weak Weyl-Berry conjecture. Among the mathematicians, this is probably the only one who can compare with him. Looks great.

He smiled and said, "It turns out that you are a student of Sir Gowers. It's a pleasure to meet you. Thank you Sir for your memory. If you have time, I welcome him to come to China for exchange and play."

Gaspe Lopez nodded quickly, and said, "I will pass it on to the professor. Also, well, Professor Xu, can I have a copy of your contact information? Email is also acceptable."

Xu Chuan smiled and nodded, "Of course."

"Thank you so much."

After exchanging contact information with the young man in front of him, Xu Chuan continued to eat.

But after a while, another person came in front of him, and this time he sat directly in front of him.

"Congratulations, you have solved another century's problem."

A voice sounded in his ear, Xu Chuan raised his head, and an acquaintance came into his eyes.

"Long time no see, Fefferman." Xu Chuan smiled and greeted the person sitting across from him with a plate in front of him. It was Fefferman from Princeton who came.

"Yeah, it's been almost half a year since we parted in Brazil last year. It seems that you have been doing well after returning to China, and you have made further progress in mathematics. Before Deligne was always worried that you would waste money after returning to China." It's my talent." Fefferman said with a smile.

Xu Chuan said with a smile: "It's just a staged achievement, and there is still a long way to go before reaching the top of the mountain."

Fefferman made an exaggerated expression, and joked: "That's it? This is a result that many mathematicians can't make in their entire lives."

After a pause, he continued: "You are one step ahead of me. The NS equation is the goal I have been researching."

Xu Chuan smiled and said, "It's just luck, and I'm also stepping on the shoulders of my predecessors."

Fefferman: "Why don't we compete? Let's see who solves the rest of the NS equation first!"

Although he can be said to be an old man in terms of age, he is not old at heart. He always maintains his love and challenge for mathematics, and it is rare to meet a like-minded friend in his life.

Xu Chuan shook his head with a smile, and declined the suggestion: "I'm sorry, I may not focus on the NS equation in the future."

"why?"

Fefferman looked at Xu Chuan in surprise and confusion. In his opinion, it is necessary to strike while the iron is hot and pursue the victory. Maybe this is likely to solve the rest of the NS equation. After all, this should be the most thoughtful time.

Xu Chuan thought for a while and said, "Many aspects."

"On the one hand, I still have many other things to do in the future, such as the collision experiment of inert neutrinos at CERN in the second half of the year."

"on the other hand"

After a pause, Xu Chuan looked at Fefferman: "I feel that the NS equation is a difficult problem that I can't solve now."

Before Fefferman spoke, he continued: "I know what you want to say, but I have thought about it, but I don't feel anything."

"Even... I have a vague feeling that the current method of proving the phased results of the NS equation will not work in the future."

Hearing this, Fefferman froze for a moment, and asked quickly with interest: "How do you say?"

Xu Chuan said with a smile: "If you are interested, let's talk about it tomorrow. Now I have to fill my stomach first and then go to rest. After all, there is still a question-and-answer session in the afternoon."

PS: There is another chapter tonight, ask for a monthly pass!