When Edward Witten and Roger Penrose were hurting each other, the report meeting also came to an end.
When the last PPT picture was shown to everyone, the atmosphere in the entire auditorium was pushed to its peak.
Even people who don't understand the paper and the proof process can understand what happened at this moment.
【.When the viscosity coefficient ν approaches zero, the solution to the initial boundary value problem of the Navier-Stokes equation tends to the corresponding ideal fluid state inside the fluid motion region. That is, there is an initial boundary value solution to the Euler equation!】
[To sum up all the above inferences, we can easily know that in the three-dimensional incompressible Navier-Stokes equation, the solution exists! And it is smooth!]
On the podium, Xu Chuan completed his final report in a steady voice.
The sound was not loud, but it reached everyone's ears clearly.
Just like the opening of the report meeting.
This is the answer to the NS equation, and it is also the knowledge of civilization and scientific progress!
The moment the words fell.
Thunderous applause sounded instantly, and continued like a tide in the vast and crowded auditorium.
Thunderous applause echoed in his ears, and Xu Chuan looked at the thousands of listeners in the audience with a smile.
To be honest, he enjoyed this moment.
Not only because of the honor, but also because this is his self-breakthrough.
The satisfaction that the former can bring is only temporary, while the latter can permeate his heart and ambition for a long time.
It took nearly half a minute for the wave of applause to gradually stop.
Xu Chuan bowed slightly to express his gratitude and respect to the audience, then stood up and spoke again: "The report on the NS equation has been completed, and the following will be the question and answer session."
"If you have any questions about my thesis or report, you can raise them now."
As before, after completing the report on the proof of the NS equation, he opened the question session.
For a report meeting, although the reporting and explanation of relevant papers are very important, the question-asking session is the key.
For a speaker, no matter how excellent his report is, no matter how detailed his paper is, no matter how many audiences he convinces at the report meeting, there will still be questions of one kind or another unavoidable.
Especially for century-old problems like the millennium.
The question-and-answer period began, and arms were raised one after another in the auditorium.
Xu Chuan started to answer questions from front to back.
This can be regarded as an unspoken rule of academic seminars.
After all, if this kind of top-level report meeting is basically arranged in advance, the top experts in the related fields will be arranged at the front.
For a century-old problem, the reporter does not actually need to be able to satisfy everyone's questions.
Because not everyone can understand related problems and papers, for the mathematics community, it is enough as long as these top experts can unanimously agree on the correctness of the paper.
Of course, this does not mean that a false paper can appear openly in front of everyone.
For the mathematical community, everyone can point out what is wrong with this paper. As long as it is reasonable, the publisher of the paper must explain it.
Otherwise this paper will be cast aside by the mathematical community.
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 question related to the tool 'microelement construction method', mainly in terms of topological construction to connect partial differential equations.
Later, some experts and experts in the field of partial differential equations such as Qiu Chengtong, Terence Tao, Alessio Figali, etc. all raised their hands to express their doubts.
Of course, Xu Chuan also answered these questions one by one.
Compared with the last phased results of the NS equation, there were more people asking questions this time, so that Xu Chuan and Nanda had to temporarily interrupt the questioning session according to the last process, and first invited the scholars who came to the report meeting to have a meal.
Continue again.
For Xu Chuan, a two-hour break at noon can also help him regain some energy to deal with questions in the afternoon.
At two o'clock sharp, the afternoon question and answer session continues.
Xu Chuan calmly responded to questions from mathematicians, physicists and even some fluid mechanics application engineers.
He can basically give satisfactory answers to most of the questions.
A small number of questions are either because the questioner is too whimsical, or they are about NS equations or fluid mechanics applications.
He couldn't give an accurate answer to the former, he could only give some of his own thoughts and ideas.
The latter maintained his usual habit and said that he was only a theoretical mathematician and did not know anything about applications.
For the latter questioners, this is indeed a pity.
After all, the Professor Xu in front of me is the person who has traveled the furthest on this road. If he can point the direction, even if it is just a word, the development of fluid mechanics will be rapidly improved.
But it is a pity that he has always declined to answer application questions at report meetings.
As for Xu Chuan, he does not need to answer these questions.
Even if he knows.
On the one hand, not answering application questions will not affect the correctness of the report and thesis.
On the other hand, although science has no national boundaries, scientists do have national boundaries.
The afternoon passed quickly with questions and answers.
When it was around 4:30, Xu Chuan also had a smile on his face.
If nothing goes as expected, this report will come to a perfect end.
But at this moment, someone else in the auditorium raised their hands.
Xu Chuan didn't care, he nodded and stretched out his hand to signal the other party to ask questions.
Immediately, the staff who had already prepared handed the microphone to the other party.
The person who stood up was a white man about thirty years old, who didn't look much like a scholar.
The man took the microphone and said: "Hello, Professor Xu, I am a media reporter from the Washington Times. Do you know about Professor Jiang Kangcai's paper from Rice University?"
This chapter is not over, please click on the next page to continue reading! "If I remember correctly, Professor Jiang's paper has proved that the smooth solution of the NS equation does not exist, and has passed peer review and been published in the paper journal.
Does this mean that your report today is completely wrong?"
Hearing this question, Xu Chuan couldn't help but frown.
At the same time, there was also a rustling commotion in the auditorium.
Most scholars had disdain in their eyes after hearing this question, while a small number of people showed interest in their eyes.
They wanted to hear how Professor Xu would answer this question.
On the other side, in the background, NTU leaders and teachers from the administrative office stood up quickly after hearing the question.
A media reporter from the "Washington Times" actually sneaked in?
Naturally, they knew about the news report written by this notorious media. They thought that the matter was over after they did not receive a reply from Xu Chuan and were scolded by Professor Tao Zhexuan.
But I didn't expect that this media company would actually arrange for people to come to the scene to cause trouble today.
After all, this media has no reporters stationed in the country, so no one would think about it.
In the auditorium, just when the staff wanted to step forward and take the reporter away.
Xu Chuan waved his hand and said, "Keep him for now."
Hearing this, the staff who had already walked over paused.
Andrew Whitt, a media reporter for the Washington Times, proudly raised his head and looked at the podium.
For the "Washington Times", if it can seize the opportunity to disgust the neighboring countries behind its sponsors, it will definitely gain the support and appreciation of the sponsors.
I originally thought that after they brought up the relevant news in the newspapers, Professor Xu would eagerly jump out to prove himself, and then they could continue to entangle according to their routine.
Unexpectedly, Professor Xu ignored them, but Professor Tao Zhexuan, another professor who was implicated by them, publicly angrily criticized them on his blog, making them a joke.
Unexpectedly provoking Terence Tao, which resulted in the Washington Times being scolded, and he was naturally scolded by the editor-in-chief. This incident made Andrew Whitt very resentful, so he came up with another crooked trick.
Since Professor Xu doesn't respond to their media, then take the initiative to find him. Isn't he going to hold a report meeting on the proof of the NS equation? Then go to the report meeting and raise this issue.
In full view of scholars from all over the world, there is no way he can escape from this problem anymore, right?
No matter how he answers, the Washington Times will basically make money and its traffic will take off.
As for reputation, do they still care about reputation?
On the podium, Xu Chuan looked at the Washington Times reporter and sneered, then said:
"Honestly, I don't know who arranged for you to come here. But the person who can make this suggestion must have no brains."
"On the Internet, it's not enough for you to be slapped in the face once by Professor Terence Teru. You have to come to me and be slapped a second time."
"In this case, I will help you!"
As soon as these words came out, the entire auditorium broke into an uproar, and many people laughed out loud.
After all, most of the scholars who came to attend the report today have read Terence Tao's blog article angrily criticizing the Washington Times.
Andrew Whitt, who was standing there, turned pale instantly.
Because it was he who made the suggestion and came here himself.
He didn't expect that Professor Xu would change his usual style and give him a sharp blow like Tao Zhexuan.
According to the expected calculation, shouldn't he be the one who raised the question and the other party would explain it academically on the podium?
After all, you are facing thousands of international scholars. No matter what, shouldn’t you maintain the proper demeanor of a scholar?
Why did things turn out like this?
Xu Chuan ignored the reporter. He waved to the staff standing aside and said, "Please help me lift a blackboard."
Hearing this, the staff who had been waiting aside quickly lifted up the blackboard.
Xu Chuan picked up a piece of chalk and started writing 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 said again: "I think you should be familiar with the formulas I listed on the blackboard."
"Of course, you may not understand it. But that doesn't matter. As long as the other people present can understand it."
"These formulas are the core formulas of Professor Jiang Kangcai of Rice University who you collaborated with. They used energy gradient theory and Poisson equation analysis methods to analyze transitional flow and turbulent flow respectively."
"There is actually nothing wrong with the formula, but there is a problem with Professor Jiang Kangcai's use."
"He is a professor of applied physics in fluid mechanics and may not be very familiar with mathematics."
"The biggest problem in his theory is that physical concepts and mathematics are equivalent, but smoothness in the mathematical sense does not exist in physics.
"In his paper, according to the derivation of the paper, the speed U of zero can be defined as a singular point. However, the speed U of zero cannot be defined as a singular point mathematically, and it is inconsistent with smoothness in the mathematical sense.
It doesn’t have anything to do with it.”
"So there is no need to go too far to prove whether his thesis is correct. From the most basic mathematics, we can judge that the core of his thesis is wrong."
After a pause, Xu Chuan continued: "In addition, even from a physics perspective, there are major flaws in his paper."
"Because when conducting experiments on fluids, it is very common for supersonic fluids to have discontinuous points, because various shock waves are velocity discontinuous areas, and according to Professor Jiang Kangcai, they can all be regarded as singular points.
Already."
"But in physics, real breakpoints are not defined this way."
"So whether from a mathematical point of view or a physical point of view, there are major flaws in the paper used by Professor Jiang Kangcai to prove the NS equation."
This chapter is not finished yet, please click on the next page to continue reading the exciting content! "In addition, if I remember correctly, the Professor Jiang you interviewed once submitted this paper to top journals such as "Annals of Mathematics"
, but without exception they were rejected and the flaws were pointed out.”
"However, he was not ashamed. Not only did he not revise his paper, he also made a 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 devoid of academic integrity."
"Finally, there is one more thing. Putting aside the academic aspects, you have no idea what the Washington Times is like?"
"In the past more than ten years, you have spread rumors and fabricated a large number of unscrupulous news for the pleasure of discrediting others. You have completely failed to behave as a news media should, without false beauty, concealing evil, respecting facts, emphasizing truth, and understanding reality.
A media spirit that is responsible and responsible for history!"
"Are you satisfied with my answer?"
As soon as he finished speaking, there was warm applause in the auditorium.
Except for Andrew Whitt, who was still standing there, all the scholars who came to attend the lecture applauded.
At this moment, Andrew Whitt felt like a clown, being laughed at by everyone.
But for Xu Chuan, this matter is not over yet.
After a brief pause, he then said: "In addition, here, I will announce something."
"Because of the "Washington Times"'s vicious and mindless behavior of smearing others and slandering me and other countries, I will temporarily cancel the secondary authorization of the "artificial SEI film" patent of my "Chuanhai Materials Research Institute" to South Korean countries.
"
"If South Korea and the Washington Times cannot 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 it for today's NS equation report. Thank you all for taking the time out of your busy schedule."
"Thanks."
After saying that, Xu Chuan left the stage, leaving the venue in an uproar and chaos.
