Xinghai Research Institute, Aerospace Research Institute.

Xu Chuan and Prince Faisal, as well as another representative of the United Arab Emirates, are receiving some light space travel training in the space training room.

After Wu Yuankang reported the matter of space travel, the reply from the top management was quickly transmitted.

To everyone's surprise, the above actually agreed to Xu Chuan's practice of following the Xinghai to space, which broke through the eyes of a large number of people.

Although they didn't understand it, Wu Yuankang and Weng Yunzong had no choice but to follow the instructions above to train the space travel trio that they had discussed.

In the case of a conventional chemical-fueled launch vehicle, it is almost impossible to complete the training of space travel 'tourists' in just three days.

In addition to the rest, it takes a long time to adjust the physical condition.

Even though SpaceX's Starship series can reduce acceleration to the point that the average person can handle, the huge thrust of the chemical-fueled launch vehicle will still allow it to accelerate more than five gigams when climbing gravity wells.

For ordinary people, when the acceleration exceeds 3G, the body will feel some discomfort, and symptoms such as severe nausea, tinnitus, and dizziness may occur.

If 5 G's is exceeded, it may be life-threatening.

So real space travel, if it is space technology based on traditional chemical fuel launch vehicles, ordinary people can say that it is difficult, or even almost impossible to do.

However, the space shuttle Xinghai, powered by an electric propulsion system, was able to use a relatively long time to climb the gravity shaft and reduce the acceleration during launch, so that it could reach a point that ordinary people could bear.

This laid the most central foundation for space travel, and it was one of the key reasons why the top management agreed and allowed Xu Chuan to go up.

Despite this, Xu Chuan and the other two 'passengers' who took the Xinghai to outer space still needed to undergo a lot of training before traveling to space.

For example, they receive training on various activities in a vacuum environment, familiarize themselves with the simple operation inside the spacecraft, and respond to emergencies.

If you don't understand this, you may choke to death if you drink water in space.

This is not alarmism, but what could really happen.

When Xu Chuan was training in space, the other side.

After detailed refinement and inspection, Liu Jiaxin, a senior sister who solved this problem, chose to submit her paper to the Annals of Mathematics, one of the four major journals in the mathematics community.

After all, she was also a student returning from her studies at Princeton, a mathematical journal co-founded by Princeton University and the Institute for Advanced Study in Princeton.

In the courtyard of Princeton University's Department of Mathematics, Professor Camilo De Rilis, editor-in-chief of the Annals of Mathematics, was looking at the paper in his hand with some headache.

It's not a headache about the authenticity of the paper in your hand, but a headache about who to find to review the manuscript.

Proof of the polynomial decomposition puzzle of the big positive integer factor!

P=NP？ One of the core problems of conjecture, such a world-class paper, is impossible to review alone.

According to the tradition of the mathematical community, the Annals of Mathematics needs to find at least 4-6 scholars in related fields to conduct joint review.

Normally, it is reasonable to arrange two scholars to review and compare in a field, which can prevent problems during the review by a single person.

And in his hand P=NP? The main core problem of conjecture involves many complex fields such as number theory, algebra, computer, complexity theory, algorithm design, etc., and it can be said that it is difficult to find the right person to review.

"In the field of mathematics, Professor Alain Konee and Professor Leinstra, who invented the elliptic curve factor, can try to invite them, and Professor Xu Chuan may also try, but I don't know what he has been doing lately."

In his office, Camilo de Rilis looked at the paper in his hand and muttered to himself, picking the right person to review it.

The polynomial decomposition problem of the big positive integer factor is one of the core of the P=NP conjecture, although theoretically it is more mathematical.

However, judging from the content of the paper in his hand, his core idea applies a large number of secondary sieve factor factorization methods and polynomial function algorithms.

Most of the top scholars in this field are concentrated in the field of computing, not mathematics.

Unfortunately, the Annals of Mathematics does not review many papers in the field of computer mathematics, and if the contributors were not also from Princeton University, this paper would actually be better submitted to the SIAM Review of the Industrial and Applied Mathematics Society of the United States.

Although it is not one of the four major mathematics journals, SIAM Review has been ranked first in the field of "applied mathematics and computational science" for 10 consecutive years, and is recognized as the most authoritative mathematics journal in this field.

Of course, the paper that was delivered to him was still this kind of top-notch paper, and Professor Camilo de Lylis had no reason to send it.

It's hard to find a professor to review a paper, but it's not a problem compared to a paper on the level of the Seven Millennial Puzzles.

Just then, the office door was knocked twice and pushed open.

Walking in was Charles Louis Fepferman, chair of Princeton University's mathematics department.

Seeing his arrival, Camillo's eyes lit up, and he quickly said: "Feverman, you came just in time, I have a paper here that needs to pick a suitable reviewer, you can help take a look." ”

Taking the paper handed over by Camillo, Fefferman glanced at it and put it back on the table without surprise.

The hottest discussion in the mathematics community recently is related to this, and he naturally knows it, and he also knows the contributors.

"The proof of the polynomial decomposition puzzle of the big positive integer factor, which is a field where pure mathematics and computer mathematics are intertwined, and you can pick the right professor from these two fields."

After a slight pause, he continued: "However, when inviting reviewers, remember to avoid the two of them, Angelis Beasley from the Department of Mathematics and Professor Xu Chuan from Huaguo. ”

Hearing this, Camilo looked at Feverman with some confusion.

Eschewing the former, he did know that Angelis Beasley was a professor of mathematics at Princeton and a mentor to the submitters of his papers.

According to the principle of review, it is impossible for him to invite Professor Angeles Beasley to do the review, even though he is also a top student in computer mathematics.

But if he avoided Professor Xu Chuan on the Huaguo side, he didn't understand.

Feverman shrugged his shoulders and explained, "Don't you feel like there's a lot of familiarity in this paper?" ”

Hearing this, Camilo was stunned for a moment, he really didn't feel it

Well, it's true that his mathematical ability is not as good as that of a top bull like Feverman, and it's normal not to feel it.

Looking at Camilo's blank face, Feverman shook his head and said: "Although this paper is a single signature, it is estimated that it has something to do with that Professor Xu, you just avoid him, he is not suitable to be a reviewer." ”

After a pause, he continued: "In addition, if you have time recently, you can contact Professor Xu more, I heard that he has been studying the Riemann conjecture recently, and he may have made some progress." ”

Hearing this, Camilo was stunned again.

"Xu he. Is he working on the Riemann hypothesis? ”

Swallowing dry, Camilo asked a little dryly.

Feverman nodded, "Yes, that's why I'm here to inform you, the Mathematical Yearbook had better not miss this opportunity." ”

Recovering from the shock, with a lingering look of surprise on his face, Camilo couldn't help but say, "God, this is crazy, isn't it?" ”

"He's solved the Hodge conjecture, the NS equation, and the Young-Mills existentiality and mass gap, and now he's looking at the Riemann conjecture, is he trying to solve the seven millennial puzzles alone?"

"It's incredible."

Peverman laughed, "Do you know why I let him avoid him when I invited reviewers?" Because there are some solutions and optimizations in the paper, which are probably related to him, or simply provided by him. ”

Hearing this, Camilo couldn't help but swallow his saliva and asked in surprise, "You mean?" This proof of the polynomial decomposition problem of large positive integer factors was also completed by him? ”

Feverman shook his head and said, "That's not it, the paper was completed by Liu Jiaxin alone, he should just provide some ideas or ideas, or help look at it after the paper is completed, solve and propose some optimization problems." ”

Hearing this, Camilo asked with some confusion: "Then why didn't he sign the paper?" This is proof of the millennial conundrum! ”

"Well, just P=NP? components of conjecture. But its importance, for the computer field, is completely top-notch! ”

Hearing this, Feverman spread his hands and said, "Who knows? Maybe you don't think you've contributed much? Or maybe you don't want to? ”

"And"

After a pause, he continued, "Even the Seven Millennium Problems are nothing to him. ”

Hearing this, the corners of Camilo's mouth couldn't help but move, and he stopped talking.

Is the Millennium Problem Nothing?

Well, maybe to that person, it might not really be anything.

After all, he had already killed three of them alone, and now he was moving towards the fourth.

Three days is not a long time.

After the careful training of Zhai Zhigang and Liu Yang at the Aerospace Research Institute, Xu Chuan has mastered the daily skills of how to act in a low-gravity environment, drink and eat, as well as aerospace training including wearing spacesuits, survival and lifesaving in outer space, and large-scale joint exercises.

Although this trip to outer space, his trip was to replenish supplies for the Tiangong space station, and the altitude was only more than 400 kilometers, and the stay time was only about six hours.

Even Xu Chuan, Prince Faisal and others would not leave the space shuttle during the whole process, but the Aerospace Research Institute still conducted a full set of training for them in case of accidents.

"Professor, it's really not good, let's wait, the current aerospace technology is not fully mature, how about you go up again after a few years of maturity?"

In the training room of the Aerospace Research Institute, watching Xu Chuan take off his spacesuit and walk out, Tang Sijia stepped forward and couldn't help but persuade again.

After knowing that this person wanted to go up, she rushed over to persuade her as soon as possible.

But it didn't work, Xu Chuan didn't listen to her at all.

Sure enough, after hearing her persuasion, Xu Chuan waved his hand without replying, and said, "Okay, don't say it again, it'll be annoying if you say it again." ”

In the past few days, he has heard similar words that are almost calloused in his ears.

Almost everyone was persuading him not to go up, or to wait for the space technology to mature in a few years, and he was almost tired of hearing it.

It's not a big deal, the astronauts have been fine for so many trips, which is enough to test the performance of the Xinghai.

At the same time, the space launch center of the Xiashu space base.

On the eve of the launch, the ground crew was busy shuttling on the take-off runway, under the command of the engineer, making the final inspection of the launch site and the hardware facilities on the space shuttle Xinghai.

On the other side, in the general control room of the launch center, Academician Chang Huaxiang presided over the final launch work with a serious face, confirming every link over and over again.

Not only him, but all the staff of the launch center were notified three days ago to adjust their condition to ensure that they are in the best condition to work in their respective posts.

Of course, not many people know that Xu Chuan is going to outer space.

This matter is currently in a state of strict secrecy, and there are no more than a few people who know about it among the Xinghai researchers.

Nominally speaking, this time the space flight was carried out to replenish the materials of the Tiangong space station.

After all, if the news is leaked, there may be some unexpected situations.

At this moment, the door to the main control room was pushed open.

Xu Chuan, who was dressed in casual clothes and was no different from usual, walked in and walked towards Academician Chang Huaxiang, who was presiding over the work.

Looking at Xu Chuan standing in front of him, Academician Chang Huaxiang was stunned for a moment, then pulled him into the lounge next to him, and then lowered his voice and criticized.

"You're crazy, you're risking your life, you know!"

When he first found out about this, he was so stunned that he almost thought he had heard it wrong.

Xu Chuan smiled and said, "Don't worry, the preparations have been made, and nothing will happen." ”

Chang Huaxiang sighed and said, "Is this a matter of preparation?" Hundreds of kilometers of outer space, if something goes wrong, the consequences are unimaginable. ”

Xu Chuan glanced at him and asked with a strange expression, "Isn't it okay if there is no problem?" ”

What's the matter, why does everyone think about accidents?

Chang Huaxiang: "."

He made sense, he couldn't refute it.

"Okay, okay, I'll leave the launch to you, I'm still waiting to go up, I'll come over and say hello to you."

With a slightly excited voice, Xu Chuan turned around and left the general control room, preparing to change his clothes and land on the space shuttle.

He has dreamed of two lifetimes of going to space and alien planets, and today he is finally about to realize one of them.

He has set this space today, and Jesus can't stop it!

He said it!