Hammer of Technology

Xu Ruixuan once asked a question on Zhihu, what kind of experience is it like to be in the same dormitory with Xueshen.

The answer at that time was very floating, and even caused a lot of trouble.

But in fact, when people are lucky enough to get along with a celebrity day and night, they will probably feel that that's all there is to it.

Only distance can produce that hazy aesthetic feeling, tear away that layer of distance, when the boss eats, lives, sleeps, brags and farts with you, it probably feels like that to everyone.

Except when the professor praised Ning Wei, the words full of love made people envy and hate.

Of course, it can also become a topic of jokes.

In short, for the students in 302 and Ning Wei's class, they soon got used to Ning Wei returning to them after disappearing for nearly half a year.Of course, Ning Wei was already used to this kind of treatment.

There is nothing to say, the world is always very gentle to those who achieve success.

In this way, Ning Wei didn't turn on the computer until he returned to the dormitory at noon, and only saw the email sent to him by Handel, the editor-in-chief of "Nature".

That Professor Smith actually resigned from his position as a professor of mathematics and intends to study philosophy?

And because of yourself?

The shock brought to Ning Wei by seeing these even surpassed the sum of all the professors' praises.

Of course, what touched him the most was not the incident itself, but a sentence that Handel gave Smith for him: "There are thorns and thorns on the road ahead of science, and the luckiest thing is that someone is willing to overcome the thorns for you."

Ning Wei took a deep breath, and recorded the attached Smith mailbox in the address book list of the mailbox.

The high expectations placed by countless people, those he knew and those he didn't know, made him feel a little stressed.

What he didn't know was that naturally after the publication of this journal, Ning Wei specially selected a section of the abstract of this paper and put it on the official Twitter, and gave a comment: "Brilliant and gorgeous ideas may be questioned." , but never buried."

British aristocrats who consciously possess noble blood and genes, and advocate chivalry, are never afraid to make the shitty things in certain countries a little bigger.

……

When Ning Wei returned to ordinary university life, someone thousands of miles away was losing his temper because of the operation of "Nature".

Princeton University in the United States can be said to be a palace-level existence in the minds of many mathematicians around the world. The School of Mathematics here has trained [-] winners of the world's highest mathematics award, the Fields Medal.

It is definitely an honor for a mathematician to be able to give a report at the School of Mathematics at Princeton University.

But at this time, in the office deep in the teaching building of the School of Mathematics at Princeton University, someone was smashing a glass.

"pang..."

With a crisp sound, a cup shattered on the ground, and the splashed glass shards even hit Lucasson Friend's arm, but he didn't notice it.

At this time, there was a copy of "Nature" magazine on the desk in front of him, and the words on the official Twitter of "Nature" were written on the cover of the magazine.

He didn't even know who secretly put this "Nature" here.

There is no surveillance inside and outside this office, because he doesn't like his every move being watched all the time, but it also provides opportunities for these Xiao Xiaoxiao.

Of course, these are not problems. The problem lies in the paper published in the "Nature" magazine.

It's been seven years, and now it's a little bit worse!

Yes, he, Lucasson Friend admitted that Ning Wei's paper did give him some inspiration, but after all, he and the group he set up persisted for seven years on the Dao problem, which troubled them Finally, he saw the hope of being able to solve the difficult problem, and if he was given a few more months, maybe he would be able to engrave his name in the temple of mathematics.

In the future, when solving similar supercritical problems, everyone will use the Lucasson space constructed under his name, but when this paper is first published in "Nature", then in the future, everyone will only cite Ningwei space to explain and Solve similar problems!

Yes, rather a space than a Luxonian space!

How could Lucasson Friend not be angry when he thought of these things?

Soon, he picked up his mobile phone and dialed out: "Didn't you say that Connathan said that he would suppress that paper for a while, why did I see that this paper was published in on Nature? Can you give me an explanation."

"I'm sorry, Mr. Flender, the editor-in-chief did agree that he would not reply to the other party for the time being, but you should know that Connerson is the editor-in-chief after all, and I have no right to decide what he thinks, let alone what he will do to deal with any paper."

"So, you mean that Connerson rejected the manuscript on the same day? Well, very good, it's great, I will ask Connerson in person! I hope he can give me a satisfactory answer!"

After speaking, Lucasson Friend hung up the phone directly without giving the other party a chance to speak.

He took a deep breath to dissipate the gloom in his heart. However, what Lucasson Friend didn't know was that the sword stabbed by a person who didn't think it was a big deal to watch the excitement could be It's not as simple as just telling him a fact.

……

Under normal circumstances, it may only feel strange that an excellent mathematics paper is not published in the top four journals of mathematics, but in a comprehensive natural science journal such as "Nature".

But this time Ningwei's situation is slightly different.

Because at the SODA World Top Computer Algorithm Conference held not long ago, Ning Wei once said such a passage when he made a concluding speech in the last 60 minutes of the 10-minute report, which received much attention.

"I don't know if you can understand this, after all, it's a bit fast... It doesn't matter if you don't understand, I have written a paper on this part and submitted it to the Journal of the American Mathematical Society "After it is published, you can compare and understand it. Although the review has not been completed, I am confident that it will pass. At least it has helped me solve practical problems.

That's all, nearly a thousand participants who attended the meeting at that time, after this meeting, Ning Wei's classic quotations at this meeting, as well as the process of answering the questions, were posted everywhere on the Internet, among which But there are quite a few who happened to capture Ning Wei's words.

Not to mention a conference of this level, those who speak as special guests have video files, and Ning Wei's 10-minute answer process has been repeatedly studied by many people.

So God knows how many people are waiting for Ning Wei's paper to be published in the "Journal of the American Mathematical Society", and are ready to study this paper.Many of them are also students of famous universities in the world.

If Ning Wei's paper fails to be published in the "Journal of the American Mathematical Society" in the end, or in other well-known journals, it may actually be quite embarrassing.However, the great success of the turbulence algorithm public beta has already made countless people ignore this possibility.

But now, this paper really failed to be published in the "Journal of the American Mathematical Society", or even in any of the world's four top mathematics journals, but it was published in "Nature", and "Nature" is still in its own Such an intriguing sentence was posted on the official Twitter account of , and countless people immediately felt that there was a story in it.

Naturally, when they saw this paper, many people began to find ways to find out what happened through various channels.Why was this paper not published in the Journal of the American Mathematical Society? Could it be that this purely mathematical journal has stricter review than Nature?Or do you dislike Ningwei's lack of mathematics in that paper?Do you want to be so funny?

Algorithms are born out of mathematics.

As the developer of the turbulence algorithm, he used the mathematical conclusions in the paper to solve the difficulties encountered by the algorithm. Why can't this high-quality paper be published in the Journal of the American Mathematical Society?

Most of the people who have similar doubts are young students in major colleges and universities.

Professors don't want to discuss this issue, but it doesn't mean they don't want to discuss it. From Twitter to Facebook, many people have asked the same doubts.

What exactly is going on?

……

Connerson could feel the pressure.

When all the questioning came to him, the editor-in-chief of the "Journal of the American Mathematical Society" didn't explain anything. He just went to work and left work as usual, never paying attention to those questioning emails, let alone pushing He groaned, as if nothing had happened.

Even when interviewed by reporters, the answer was extremely understated.

"Oh, I remember that manuscript, it was rejected. It's nothing! Maybe you don't know the workload in our editorial office. Every year we reject at least hundreds of papers from all over the world. I think this is very important. It’s nothing to a top journal with strong credibility in mathematics.”

This answer also brought him more criticism and criticism, and even many doubts about the fairness of the so-called four top mathematics journals appeared on the Internet...

However, Connerson still remained silent, no matter how much he questioned, there was no explanation.

What is there to say?

If you don't break out in silence, you will perish in silence.

……

All kinds of disturbances on the Internet have not had time to spread into the country.

Ning Wei also finally found his once ordinary rhythm of life during this period of time.

I have to say what is different. It is probably that when walking on campus, strange juniors and juniors often greet him. When I go to the cafeteria and occasionally queue up to think about problems, I will be secretly photographed, and even invited to take a group photo. The worst time is that he is quiet. I was in the cafeteria patting the team, preparing to eat, and after being recognized, someone suggested it, and then everyone asked him to be at the front of the line, under the pretense of not letting the god of learning waste time in the queue...

Ning Wei: "???"

As for the class, the teachers and professors are very open-minded. They said that Ning Wei can go to the class if he wants to, and it doesn’t matter if he doesn’t want to. Anyway, even if he is called, he will not be called.This treatment is probably what he can enjoy.

But the senior year didn't come and there were few classes, so there was nothing special, Ning Wei would still go to class.

Anyway, where to read books?

Yes, Ning Wei was reading. Since his tutor required his graduation thesis to meet the standards of SCI District [-], he could only try to find a way.Therefore, it is necessary to supplement the knowledge of statistics crazily.

To put it bluntly, I chose statistics as my final subject, purely because this course is simpler than other courses, and I can basically pass the test if I just find a direction where statistics is applied in real life.

But that's just a final pass, not to mention that it can't meet the standards of SCI District [-], that is, SCI District [-]. It is estimated that the reviewers will feel that it is too watery.

So these days, Ning Wei spends his time reading books.

Methodological likelihood functions, non-parametric and semi-parametric statistical inference to Bayesian statistics...

These days, statistical theory has built an outline in his mind.

It's just that the topic of the thesis is still unclear.

After a week like this, at the end of March, the weather in Jiangcheng began to heat up significantly. Huawei and the laboratory finally negotiated all the detailed regulations for cooperation, and specially called Ning Wei to sign a contract.

Probably the charter is similar to what was discussed before, but it has been implemented in every detail.

Jiang University's two doctoral brothers who specialize in contract law spent an afternoon carefully explaining each of the contract provisions, which basically involved his various contract contents, which were similar to what Ning Wei had requested before.

As a natural person, he authorized the patent rights in his hands to Huawei and the laboratory. It was simple and clear. Anyway, he obtained his own compensation through authorization.

What is more complicated is the hardware part of the turbulence algorithm. Because it is first authorized to EDA software and indirectly authorized to Huawei, the description of this part and the interests of all parties are relatively cumbersome.

But in fact, to put it bluntly, if this area is authorized to other network equipment companies in the future, the price at most can only be the same as the price authorized to Huawei, and cannot be cheaper. If it is cheaper, then the authorization fee from Huawei will also automatically decline.

After all, they also have to participate in the research and development of EDA. It cannot be said that they worked hard and finally made wedding dresses for their colleagues.

As for the contract between the laboratory and Huawei, there are more contents. Ning Wei glanced at it and found that it was at least six or seven centimeters thick.

Of course, he doesn't care about these.

Anyway, after signing this contract, no surprises, when he formally enters the Yanbei University School of Mathematics to study, he will be a proper billionaire, that is, buy two houses near Yanbei University, and take Lao Ning and Ning's mother together. It is not a big problem to live in the capital.

Of course, the premise is that the two old people agree.

I did enough psychological construction before, but I really lost the excitement after signing the contract.

After all the signings were completed, everyone celebrated briefly, and then Lu Changbin called Ning Wei to his office alone.

"Ning Wei, Huawei will pay about 6000 million for the first time, as a subsidy for EDA software projects from project approval to cooperation. This is what I think about this money. We have invested about 500 million in total before. This part Reserved for other future projects of the laboratory. There is still 500 million yuan, part of which will be handed over to the school, and part of it will be used as a bonus for project team members. There should be about 4000 million yuan left. When the laboratory receives this After the money is paid, it will be sent directly to your card. But the taxes and fees must be deducted first, no problem?"

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130 A Coincidentally Selected Topic for the Concluding Dissertation

4000 million RMB?

It seemed quite a lot, but Ning Wei didn't feel anything.

No, it's not that much. After tax deduction, there are only about 2000 million yuan left, which is actually not that much.

floating...

In fact, Ningwei's mind was not completely focused on the issue of money. Considering that the EDA project had finally found its destination, he remembered the ambition that he and Yu Xingwei had made when the project was first established, and waited until they proved that this EDA software had practical significance. Well, invite that Professor Han back and let him code until he is bald.

Now he is about to leave the project team, and if he doesn't mention this request, he probably won't have a chance.

At this point, Ning Wei said: "You can handle the money as you see fit. It's that Professor Han I picked before. I don't know if I can let him return to our project team now?"

"Old Han? Oh, it's a question of whether it is possible or not. The main reason is that he has applied for a project by himself and is busy. He probably doesn't have time to come here." Lu Changbin replied.

"Oh? What project did Professor Han apply for? Can you tell me about it?" Ning Wei asked curiously.

Although the professor Han didn't give him face at the time, Ning Wei actually had a good impression of the professor, and he was really curious about what project the professor chose.

"Are you interested in Lao Han's project? Wait a minute, I'll look for his opening report." After speaking, Lu Changbin stood up, went to the filing cabinet behind him, and began to search.

Soon Professor Han's opening report was found by Lu Changbin and handed to Ning Wei.

Ning Wei read it carefully, and it was indeed very pragmatic.

Professor Han's opening topic is about shortening the time of the random walk algorithm, which is also related to the direction of artificial intelligence. For example, this type of algorithm involves the sampling speed problem in the machine learning model.

But it is very interesting that this proposition happens to overlap with a geometric problem that has troubled the mathematics community for many years.

A simple description of this geometric problem in everyday language is that if there is a watermelon, what method can be used to divide it in half and keep it fresh for a longer period of time?

In order to keep the pulp fresh for as long as possible, the meaning is to minimize the area of ​​the pulp exposed to the air, that is, to minimize the area of ​​the slices, which is of course achievable.

But this can lead to a more advanced question, that is, whether the three-dimensional result can also be established in high-dimensional space.

Described in a specific mathematical language, if a convex body of any dimension is bisected by a lower-dimensional plane, is there a constant c that allows the convex body to have at least one tangent surface whose area is greater than c.

This is the KLS conjecture problem that is not too well-known in the general population but has great practical value.

The proposition of three-dimensional space in life is actually easy to understand.

Because no matter what kind of watermelon grows, it is impossible to grow like thin strips at every angle.If it is a long watermelon, if you cut it vertically, the cutting surface will be smaller. Of course, you can also cut it at a horizontal angle, so that the cutting surface will be much larger.

But if it is placed in a higher dimension, it is not so simple.

But everyone knows very well that mathematicians are not born to make people feel at ease. They can always interpret a problem from various strange angles.So the mathematics community put forward another proposition, why is the cut watermelon flat?

Can you find the smallest surface area that bisects this watermelon?