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.
To be continued...