When Edward Witten and Roger Penrose were stabbing each other's hearts, the report meeting also came to an end.

When the last PPT picture was presented in the eyes of everyone, the atmosphere of the entire auditorium was pushed to the peak.

Even people who can't understand the paper and the proof process understand what is happening at this moment.

【. When the viscosity coefficient ν tends to zero, the solution of the initial boundary value problem of the Navier-Stokes equation tends to the corresponding ideal fluid state in the fluid motion region. That is, there is a solution to the initial boundary value of the Euler equation! 】

[To sum up all the inferences, we can easily know that in the three-dimensional incompressible Navier-Stokes equation, the solution exists!] And smooth! 】

On the podium, Xu Chuan completed the final report in a steady voice.

The sound was not loud, but it was clear to everyone's ears.

As at the beginning of the presentation.

This is the answer to the NS equation and the knowledge of civilization and scientific progress!

At the moment when the voice fell.

Thunderous applause rang out in an instant, and in this large and crowded auditorium, it lasted like a tide.

Thunderous applause echoed in his ears, and Xu Chuan looked at the thousands of listeners with a smile.

Honestly, he enjoyed moments like this.

Not just because of the honor, but also because it was his self-breakthrough.

The satisfaction that the former can bring is only temporary, while the latter can permeate his ambition for a long time.

It took nearly half a minute for the tidal wave of applause to gradually stop.

Xu Chuan bowed slightly to express his gratitude and respect to the audience, and then got up and spoke again: "The report on the NS equation has been completed, and the following will be the question session." ”

"If you have any questions about my paper or report, you can ask them now."

As before, after completing the report on the proof of the NS equation, he opened the question session.

For a presentation, although the report and explanation of relevant papers are important, the questioning session is the key.

For a presenter, no matter how good his report is, no matter how detailed his paper is, no matter how many listeners he has persuaded at the presentation, there will still be unavoidable doubts of one kind or another.

Especially when it comes to the millennium of the century.

The question session began, and in the auditorium, arms were raised one after another.

Xu Chuan began to answer questions from the people who went to the back.

This is also the unspoken rule of academic seminars.

After all, if this kind of top-level report will be basically arranged in advance, the top bulls in those related fields will be arranged at the front.

For the problem of the century, the presenter does not really need to be able to satisfy everyone's questions.

Because not everyone can understand the relevant problems and papers, it is enough for the mathematics community to agree on the correctness of the papers.

Of course, this does not mean that a fake paper can appear in front of everyone's eyes.

For the mathematical community, everyone can point out what is wrong with the paper, and as long as it is reasonable, then the publisher of the paper must explain it.

Otherwise the paper would have been spurned by the mathematical community.

Walking along the front row, Xu Chuan began to ask questions.

To his surprise, the first person to ask questions was his mentor, Edward Witten.

He raised a problem related to the tool 'Differential Construction', mainly in relation to the connection of partial differential equations to topological constructions.

Then Yau Chengtong, Tao Zhexuan, Alessio Figali and other big bulls and cubs in the field of partial differential equations raised their hands to express their doubts.

Of course, Xu Chuan also answered these questions one by one.

Compared with the phased results of the NS equation last time, there were more people asking questions this time, so that Xu Chuan and NTU had to temporarily suspend the questioning session according to the last process, and invited the scholars who came to attend the report meeting to have dinner first, and then continued in the afternoon.

For Xu Chuan, a two-hour break at noon can also give him some energy to cope with the questions in the afternoon.

At two o'clock, the afternoon question session continued.

Xu Chuan calmly responded to the questions of mathematicians, physicists, and even some engineers in the application of fluid mechanics.

He can give satisfactory answers to most of the questions.

A few of them are either too whimsical or have something to do with the NS equation or the application of fluid mechanics.

In the former, he could not give accurate answers, but could only give some of his own thoughts and ideas.

The latter, on the other hand, maintained the habit of saying that he was only a theoretical mathematician and did not know anything about the application.

And for the questioners who followed, this is indeed a pity.

After all, the Professor Xu in front of him is the person who is the farthest on this road, and if he has the direction, even if it is just a sentence, the development of fluid mechanics will be improved rapidly.

Unfortunately, he has been politely refusing to answer questions about the application at the briefing.

For Xu Chuan, there is no need for him to answer these questions.

Even if he knew.

On the one hand, not answering application questions will not affect the correctness of the report and the paper.

On the other hand, although science has no borders, scientists have borders.

The afternoon passed quickly in a question and answer.

When it was close to half past four, Xu Chuan also had a smile on his face.

If nothing else, this report will come to a perfect end.

But at that moment, someone in the auditorium raised their hands again.

Xu Chuan didn't care, nodded and stretched out his hand to signal the other party to ask a question.

Immediately, the staff who had already prepared the microphone handed the microphone to the other party.

Standing up was a white man in his mid-thirties, who didn't look much like a scholar.

The man took the microphone and said, "Hello Professor Xu, I'm a media reporter for The Washington Times. Do you know about Professor Jiang Kangcai's paper at Rice University? ”

"If I'm not mistaken, Professor Jiang's paper has proved that smooth solutions to the NS equation do not exist, and it has been peer-reviewed and published in a journal, does this mean that your report today is comprehensively wrong?"

Hearing this question, Xu Chuan couldn't help frowning.

At the same time, there was a stirring in the auditorium.

When most scholars heard this question, their eyes were full of disdain, and a small number of people showed interest in their eyes.

They wanted to hear how Professor Xu would answer that question.

On the other side, the leaders of Nanda University in the background and the teachers of the administrative office quickly stood up after hearing the question.

A reporter from the Washington Times actually got involved?

Naturally, they knew about the news report written by this notorious media before, and they thought that after not getting a reply from Xu Chuan and being angrily scolded by Professor Tao Zhexuan, the matter would have passed

didn't expect that this media would arrange someone to make trouble on the spot today.

After all, this media does not have reporters stationed in China, and no one will think about it.

In the auditorium, just as the staff wanted to step forward and take the reporter away.

Xu Chuan waved his hand and said, "Leave him for the time being." ”

Hearing this, the staff who had already walked over paused their steps.

And Andrew Whitt, a media reporter for The Washington Times, proudly looked up at the podium.

For the Washington Times, being able to seize the opportunity to disgust the neighboring countries behind the financiers will definitely win the support and appreciation of the financiers.

Originally, I thought that after they brought up relevant news in the newspapers, Professor Xu would be eager to jump out and prove himself, and then they could continue to entangle according to the routine.

As a result, I didn't expect that this Professor Xu ignored them, but another Professor Tao Zhexuan Tao who was involved in them openly scolded them on his blog and made them a joke.

accidentally provoked Tao Zhexuan, causing the "Washington Times" to be scolded, and he was naturally scolded by the editor-in-chief, which made Andrew Whitt very resentful, so he came up with a crooked trick.

Since this Professor Xu did not respond to their media, then he took the initiative to find him, didn't he want to hold a report on the proof of the NS equation? Then go to the briefing and raise the issue.

With scholars all over the world in full view, it is impossible for him to escape this question anymore, right?

And no matter how he answers, for the Washington Times, it is basically earned, and the traffic can take off.

As for fame, do they still care about fame?

On the podium, Xu Chuan looked at the media reporter of the "Washington Times" and sneered, and said:

"To be honest, I don't know who arranged for you to come over. But the person who can make this suggestion must not have any brains. ”

"On the Internet, it is not enough for you to be slapped in the face by Professor Tao Zhexuan, you have to take the initiative to come to me and be beaten a second time."

"In that case, I'll fulfill you!"

As soon as these words came out, the entire auditorium was in an uproar, and many people laughed directly.

After all, most of the scholars who came to attend the report meeting today have read Tao Zhexuan's article on his blog angrily criticizing the Washington Times.

And Andrew Whitt, who was standing there, instantly turned blue.

Because the person who made this proposal and came here in person was none other than himself.

He didn't expect that this Professor Xu would change his previous style and directly slap him as sharply as Tao Zhexuan.

As expected, shouldn't he have asked questions and the other party explained academically from the podium?

After all, this is facing thousands of international scholars, no matter how you say it, you should maintain the demeanor of a scholar?

Why did things turn out the way they did?

Xu Chuan ignored the reporter, he beckoned to the staff standing on the side, and said, "Please help carry a blackboard." ”

Hearing this, the staff who had been waiting for a long time quickly lifted the blackboard.

Xu Chuan picked up a piece of chalk and began to write on it.

【.2u(x，y，z)=Fx(x，y，z，t)μ(μ/y)+(μ/y)=0】

After writing down some formulas, Xu Chuan turned to look at the reporter and spoke again: "I think you should be familiar with the formulas I listed on the blackboard. ”

Of course, you may not be able to read it. But that's okay, the other people present can understand it. ”

"These formulas are the core formulas of the paper of Professor Jiang Kangcai of Rice University, which you co-authored, and use energy gradient theory and Poisson equation analysis methods to analyze transition flow and turbulent flow respectively."

"There is actually nothing wrong with the formula, but there is something wrong with the use of this Professor Jiang Kangcai."

"He's a professor of applied physics in fluid mechanics and probably doesn't know much about mathematics."

"The biggest problem with his theory is that physical concepts and mathematics are equivalent, but there is no mathematical smoothness in physics.

In his paper, according to the paper, a velocity U of zero can be defined as a singularity. But the velocity U is zero, which cannot be mathematically defined as a singularity, and it has nothing to do with mathematical smoothness. ”

"So there is no need to prove whether his thesis is correct or not, and you can judge that the core of his thesis is wrong from the most basic mathematics."

After a pause, Xu Chuan continued: "In addition, even from the perspective of physics, there are major flaws in his paper. ”

"Because when experimenting with fluids, it is very common for supersonic fluids to have discontinuities, because all kinds of shock waves are velocity discontinuities, and if you say according to Professor Jiang Kangcai, they can be counted as singularities."

"But in physics, that's not how a true breakpoint is defined."

"So from both a mathematical point of view and a physical point of view, the paper that Professor Jiang Kangcai used to prove the NS equation has major flaws."

"In addition, if I am not mistaken, the Professor Jiang you interviewed once submitted this paper to top journals such as the Annals of Mathematics, but without exception was rejected and pointed out the flaws."

However, he was not ashamed, not only did he not revise his paper, but he also made a big fuss with the International Mathematical Union and the Clay Institute of Mathematics, demanding that the mathematical community accept his erroneous paper.

"In my opinion, this is unscholarly."

"Finally, aside from the academic level, don't you have any idea what your Washington Times is like?"

"In the past ten years, you have fabricated a large number of unscrupulous news of all kinds to smear others for fun, and there is no media spirit that the news media should have, which is not false beauty, does not conceal evil, respects facts, emphasizes truth, is responsible for reality, and is responsible for history!"

"Are you satisfied with my answer?"

When the words fell, the auditorium burst into warm applause.

With the exception of Andrew Whitt, who was still standing there, all the scholars who came to the presentation applauded.

In this moment, Andrew Whitt felt like a clown, being ridiculed by everyone.

But for Xu Chuan, this matter is not over.

After a brief pause, he continued, "Also, here, I will announce something. ”

"In view of the Washington Times's unbrainless smearing of others and slandering me and other countries, I will temporarily cancel the secondary authorization of the 'artificial SEI film' patent of the 'Chuanhai Materials Research Institute' to South Korean countries."

"If South Korea and the Washington Times can't give me a satisfactory and fair apology, I will permanently cancel the authorization of the artificial SEI film patent."

"Including if I have any research results in the future, I will refuse to cooperate with South Korean countries!"

"That's all for today's NS equation presentation, thank you for taking time out of your busy schedule."

"Thank you."

After speaking, Xu Chuan left the stage, leaving behind an uproar and disorder.

PS: The second more asks for a monthly pass!

(End of chapter)