On the day of the report meeting, the campus of NTU was crowded with people.
Not only mathematicians and physicists from all over the world, but also many students and professors who did not receive invitations came to join in the fun.
The auditorium of the old campus was crowded and dark. The auditorium, which could accommodate more than a thousand people, was not only empty, but the center of the corridor was also crowded with scholars who came to listen to the lecture.
There were no seats, so these people sat on the floor.
In fact, these people who were able to squeeze in were lucky. Outside the auditorium, there were many more who came a step too late and didn't even squeeze in.
In the front seat, Witten glanced at the figure walking by and asked with a smile: "I didn't expect you to come here too."
Sitting next to him is Professor Kartik Srinivasan, a top figure in the world of physics and a master in the field of contemporary fluid mechanics.
Although few achievements in the field of fluid mechanics have won the Nobel Prize, no one can deny the importance of this field.
In particular, top experts in this field play an important role in the development of a country.
Professor Srinivasan is such a top talent. He is a tenured professor at Harvard University in the United States. He has solved many problems in fluids and turbulence. He has also participated in the design of the space shuttle and the controllable nuclear reactor at Stanford University.
Famous projects such as the control engineering of fusion fluids.
Srinivasan: "The NS equation is the most important problem in fluid mechanics. Professor Xu is a Nobel Prize and Fields Medal winner. No one can refuse his lecture."
"Even if it's just a phased result."
As he spoke, he looked around and then said: "It's not just me, I saw a lot of acquaintances here."
"It's you, I'm quite curious as to why you, who is engaged in theoretical physics, are here."
Witten smiled and said: "I'm not only good at physics, but also mathematics."
After a slight pause, he continued: "What's more, he is still my student."
It has to be said that when he was at Princeton, breaking his principles and accepting Xu Chuan as his student together with Deligne was something he was proud of and the most correct thing to do.
Srinivasan shrugged and said, "It's a pity that Professor Xu doesn't seem to be very interested in high-energy physics and theoretical physics. He cares more about mathematics."
Witten smiled and said: "It seems that you haven't gone out much while staying at Harvard, and you don't know much about the outside world."
"You must have heard of the recent news about sterile neutrinos and dark matter in the physics community, right?"
Srinivasan nodded and said, "Of course I have heard of it."
"That's what he found."
"what?"
Professor Srinivasan looked confused. He is a person who engages in applied physics and is not very interested in theoretical physics. Unless it is the top results or the results that he is concerned about, he rarely understands them.
Last time, the theoretical physics community broke out that traces of dark matter had been discovered. He had understood the situation and it was a successful result, but because it was still in doubt, he was not interested.
When dark matter is really discovered, there will be no rush to learn more about it.
After all, the world of theoretical physics is like that. It takes at least more than ten years for a new discovery or theory to be verified or applied.
For him, instead of paying attention to this, it is better to understand what his peers are doing.
So he really doesn’t know who the discoverer of dark matter is.
On the side, Witten said with a smile: "Are you surprised? After all, he is my student, so it doesn't matter if he has made some achievements in theoretical physics."
Srinivasan glanced at Witten, and his smug tone sounded as if he had discovered dark matter.
.......
In the auditorium, the bustle was not only the scholars sitting in the lecture hall, but also the staff who maintained order at the lecture hall.
These staff and teachers responsible for logistics have not had a break since yesterday.
Not only do we need to arrange the scene, carefully check the nameplates and seats, we also need to receive the audience who come to attend the report meeting, and we must always pay attention to the situation on site.
This kind of top-notch seminar is for top scholars from all over the world. It is crowded with people. If something unexpected happens, it will really make the whole world laugh.
Moreover, this is the first time that NTU has truly stood on an international stage and shown itself to the world. It can be said that this report will be related to the future of NTU.
For today's report meeting, NTU President Liu Gaojun personally sat in the background to prevent any surprises.
"Professor Xu, how do you feel? There is nothing wrong with you."
Backstage, Liu Gaojun asked Xu Chuan who was sitting next to him with concern. This person was the real protagonist today, and Nanda was just promoted along with him.
Without him, it would have been impossible for NTU to hold such a top-level lecture.
Xu Chuan smiled and said: "Principal, you have asked me this three times. Don't worry, there is no problem."
After receiving an affirmative answer again, Liu Gaojun breathed a sigh of relief and said with a smile: "You are the only one who can be so calm. Look at me, I'm so nervous that my forehead is sweating."
This is indeed true. In order for this report to be held smoothly, he was so worried that his forehead was sweating, even if the air conditioner in the backstage was turned on.
Xu Chuan smiled and shook his head.
To him, this was just an ordinary report meeting.
At most, the seven millennium problems of the NS equation are special and have attracted scholars from two different fields: mathematics and physics.
But this is not unheard of. When I made a report on the existence and mass gap of Yang-Mills in my previous life, the mathematical and physical communities also came together.
"Professor Xu, the time has arrived at 8:25, and everything has been prepared. Do you think we can go on stage now?"
In the background, a doctoral student who was acting as a temporary staff member ran over and looked at the man who was sitting leisurely on the chair without any nervousness and asked respectfully.
This man is really a god. There are so many top-notch people out there, but he doesn't feel nervous at all.
If it had been him, he would have been so nervous that he would have fainted on the spot.
This is the difference between him and the elder! The doctoral student sighed in his heart.
Xu Chuan nodded, said thank you, got up and walked towards the front desk.
.......
Wearing a formal suit, Xu Chuan walked steadily from the backstage to the stage of the auditorium and walked to the podium that had been arranged.
When he appeared on the stage, the noisy sounds in the auditorium disappeared instantly, and the auditorium became quiet in an instant.
What then appeared was that countless people turned their eyes to the podium at the same time, and the atmosphere was so tense that people stopped breathing unconsciously.
Being stared at by thousands of people in the audience, Xu Chuan didn't feel too nervous.
After all, this is not the first time he has stood on such an occasion, nor is it the first time he has challenged a world-class problem.
Not to mention his previous life, in this life alone, he has stood on a stage of this level several times.
After briefly testing whether the microphone on the podium was normal, Xu Chuan took a deep breath and said calmly and clearly:
"First of all, welcome to everyone who has come from afar. Thank you very much for taking time out of your busy schedule to come here to participate in this report."
"Everyone's time is precious, so I won't waste it too much and will get straight to the point."
As he spoke, Xu Chuan controlled the equipment on the podium and launched the ppt document prepared in advance.
The phased results of the ns equation were more than two hundred pages long, so it was impossible for him to use that document as an explanation document.
After looking at the screen behind him and confirming that there was no problem with the projection, Xu Chuan continued: "I believe that everyone has read my thesis before coming here."
"So in the following time, I will only give a brief explanation of the proof process in the paper. Those references and processes that are not very important will no longer be explained in this report meeting. I will give more
Time is left to explain the ideas and key steps to prove the phased results of the ns equation."
"I hope this can answer any questions you may have."
"Of course, after the report is over, if you still have any questions, you can ask them in the final question session, and I will do my best to answer them for you."
"Next, I will start the report meeting on the phased results of the ns equation."
As he finished speaking, Xu Chuan pressed the control device again.
The ppt projected on the curtain behind him turned to a new page, and lines of calculations were presented in front of everyone.
"p*dv/dt=pf-▽p μ▽2v, this is the missing form of the ns equation..."
"...After changing the weak form and relaxing the initial value conditions, (v?,u?,θ?)(x)∈h1*h2*h2 becomes (v?,θ?)
∈h1?(0,1),uo∈h1?(0,1)..."
"There exist some positive constants 0 such that for any (x, t)∈(0,1)(0,∞). It can be obtained that cˉ1≤u(x,t)≤c,cˉ1≤θ(x,t≤c)
,and......."
"...Introduce harmonic equations with functions as coefficients, replace Euler's equations and apply to all turbulent flows, resulting in a universally valid system of equations."
"Under normal circumstances, the turbulent region is a region where cosa evolves from being approximately 1 to close to 0, and a universally valid analytical solution is difficult to obtain."
"And what follows will be the key to the entire analysis."
"...From here, introduce Fourier space and perform function approximation on it..."
On the podium, Xu Chuan quickly explained his proof process according to the projected ppt.
Under the stage, the audience was listening attentively. Even many scholars in the back row who could no longer keep up with the rhythm still widened their eyes and listened carefully, for fear that they would miss some details.
In the front row, Deligne and Terence Tao sat together, looking at the young figure on the stage and communicating quietly.
Tao Zhexuan: "A few years ago, I participated in an exchange meeting at Princeton. At that time, I ran into Professor Xu in the corridor and had an exchange with him."
"At that time, his thinking was quite fast and he had a very deep understanding of mathematics. He didn't look like a 17 or 18-year-old boy."
"I was convinced at that time that he could carve out a mathematical path in the mathematics world in the future."
"I just didn't expect that in just a few years, he would already be at the pinnacle of the mathematical world. He not only solved one of the seven millennium problems, but is now heading towards the second one."
Hearing Terence Tao's sigh, Deligne seemed to be lost in memories. After a while, he said: "He is the most talented, talented and hardest-working student I have ever seen in the field of mathematics."
"When he was at Princeton, his learning ability was so strong that it surprised both Witten and me. The teachings of the two of us could barely satisfy his learning."
"His desire for knowledge is something I have almost never seen in another person except in my teacher."
"During his time at Princeton, he had almost no recreational activities. His favorite thing was to go to the Ivy Club and watch movies."
Tao Zhexuan sighed: "This is a weirder than Perreman."
Deligne said: "Actually, you can't say that. Under normal circumstances, he is quite willing to communicate with others, and he is also good at integrating into the group, but he rarely does so."
After thinking for a while, Deligne added: "Of course, it's really weird when he studies problems. He likes to shut himself in a room alone like Perreman."
Shrugging, Deligne continued: "You know, mathematics is a subject that requires inspiration and communication. This kind of research method..."
Tao Zhexuan shrugged and added: "It is indeed rare."
.......
ps: The second update is sent to me. Please vote for me.
