I Don’t Want to Win Lying Down

Department of Mathematics, Beijing University,

As the best university in mathematics in the country, there are countless so-called mathematics geniuses in this department. If this department is only ranked second, then no university’s mathematics department dare to say that it is the first. The presence.

Two hundred undergraduates are enrolled here every day, half of which are recommended by competitions. Almost all domestic and international mathematics Olympians who have won gold medals are here, and they are also known as the top of the four madman departments.

In addition to the geniuses who were originally in the Department of Mathematics, there are also many other majors who come to study, such as Computer Science, Economics, Physics, etc. Those outstanding in their respective departments go to the Department of Mathematics for relevant studies from time to time.

The students studying here are divided into two or four classes according to the competition and college entrance examination students. It can be said that...the competition is very strong and the pressure here is great, but as long as he can carry it here, then he is not ordinary people.

It is also for this reason that geniuses and masters gather, almost all of them are devoted to studying and studying. The vast majority of students will choose to go abroad to continue their studies after graduation, and then... only 20% of them come back. .

Five hundred people go out every year, and only less than one hundred people return. After obtaining a doctorate abroad, many choose to stay and work. Some particularly outstanding people become university professors or associate professors, and the middle ones are in major universities. The company holds important positions.

For example, mathematical principles play a pivotal role in price models, statistical analysis, financial products, and best investment portfolios. Chinese people are good at mathematics, which is normal in the eyes of foreigners. If they are good, they are not Chinese.

however...

At this moment,

The Department of Mathematics of Beijing University encountered a big problem. Almost everyone in the department was trapped in it. This problem occurred only five minutes ago... Professor Zhang Yaying is a professor of the Department of Mathematics of Beijing University and also a subject. Academician of the Academy.

He serves as the injection of international mathematics research institutions, the director of the Mathematics Development Laboratory, the director of the Mathematics Association, the editor-in-chief of seven top domestic and foreign journals, and has contact contributions on Riemannian manifolds and Z functions. In general... he is China The limits of mathematics.

There should be nothing wrong, but... Zhang Yaying received a call from Xiao Sun, the head coach of the national team in charge of training the math competition. Associate Professor Sun explained the current problems to Zhang Yaying.

"Academician Zhang..."

"We can't even read this question... It seems to be a physical phenomenon, but it needs to be expressed in non-Euclidean geometry." Associate Professor Sun smiled bitterly: "That's right... Academician Xu Mang is in our training base. It was he who had this problem and asked us to solve it within four hours and seek help from anyone at will."

"Xu Mang?"

"Yes... he is the consultant of the national team for this math competition." Zhang Yaying said helplessly: "What is the problem, you send me a photo, I will show you...Is it really so difficult? Can't even read it? This is a bit exaggerated."

"No no no!"

"Academician Zhang...Academician Xu Mang is no ordinary person!" Associate Professor Sun said seriously: "You think he won the Nobel Prize in Physics at such a young age. I think this year's Nobel Prize in Physics should also be him. After Budding and Fred Sanger, the third person to win this honor in the same field in a row."

"It can be seen how powerful he is, and his research results are based on theory, relying on mathematical calculations..." Associate Professor Sun explained: "It can be seen how powerful academician Xu Mang is in mathematics, but... I asked him, Why not study mathematics."

"..."

"Everyone knows this. He doesn't like mathematics. He was forced to learn mathematics only because theoretical physics needs mathematics." Zhang Yaying smiled: "I was very angry when I heard this. Now think about it. Xu Mang’s."

"in fact..."

"There is a deeper reason." Associate Professor Sun said: "According to Academician Xu Mang's explanation, it was all because his wife was holding a kitchen knife on his neck... and he had to participate in the so-called competition. , But forced to learn mathematics."

"..."

"That... forget it." Zhang Yaying said hurriedly: "Send your question over and I will study it."

hang up the phone,

Less than thirty seconds,

Zhang Yaying received an e-mail with a picture attached to it. He just glanced at it and didn't find it difficult. As a result, when he officially entered the resolution process, he realized how hasty the previous glance was.

This question...

Not easy!

It is not comprehensible at the sight, and many issues need to be considered... In short, it is to describe physical phenomena as precise mathematical equations.

"This..."

"Is this too much for college students?" Zhang Yaying frowned, full of doubts about this problem. Its difficulty far exceeds the scope of those contestants can solve, and it is more biased towards practical applications.

but...

Since Xu Mang said that he could find anyone to solve it, is this challenging the Department of Mathematics of Beijing University?

For a while,

Zhang Yaying ignited a fighting spirit and hadn't competed with others for a long time. When he was studying, his favorite was to find someone to compete. Now that he is in this position, he doesn't even have a chance to compete, but Xu Mang gave such a chance.

quickly,

The flame of fighting spirit is a bit bleak,

It's so hard...

"Hey?"

"Old Yi!"

"I have a problem that physics is now described as a mathematical equation. Let's solve it together!" Zhang Yaying said: "You help me find out what physical phenomenon this is. It seems to be an extreme space-time curve description problem."

"Uh?"

"Have you studied physics?" The other party said with a smile, "Let me see!"

moment,

This man named Lao Yi slapped Zhang Yaying back with a serious tone.

"Old Zhang!"

"Who are you helping to solve this problem?" Lao Yi asked: "This problem is not general... From the perspective of understanding, it involves the concept of four-dimensional space-time... and it looks like this... this... . The other party is not an ordinary person, right?"

"..."

"It's Xu Mang."

"He was in the mathematics competition training base, and then gave the contestants such a problem, solved it in four hours, and at the same time asked anyone to help." Zhang Yaying said helplessly: "I think this is challenging us. "

"he?"

"He took this problem to let your players solve it?" Lao Yi said confusedly: "This is obviously aimed at your math department!"

"In that case..."

"Then I can't help anymore!" Lao Yi showed a smile: "But I can't solve it. You can find a way. This is completely out of physics. It is a pure mathematical problem, very pure... No knowledge of physics is required."

hang up the phone,

Zhang Yaying fell into silence. If he was given a few days, it might be able to solve it, but it was only four hours and it was too harsh to speak. It was very unfair...unless the equation of the problem was extremely simple.

is it possible?

Xu Mang’s question cannot be addition, subtraction, multiplication and division.

quickly,

Zhang Yaying found several other professors in the Department of Mathematics to study this problem together. However, after half an hour, he concluded that it could not be completed in a short time, at least two weeks or more, and even a computer was needed.

"Academician Xu Mang has created a problem for our Department of Mathematics!" A certain professor sighed, "He wanted to do this a long time ago, right?"

"he..."

"It's hard to say...Although there is no intersection, I heard from other people that Academician Xu Mang is very strange." Another professor said: "He seems to be easygoing, but he is actually very stubborn and has a bad temper. Listen. Said that he rejected many preferential policies for him."

"He has the capital to refuse." Zhang Yaying said openly: "I won the Nobel Prize in Natural Science at such a young age, and it was the first natural science prize in our country, plus his age... I still can't see it now. His height, because now is just the beginning."

"All right!"

"Let's go on!" Zhang Yaying said solemnly: "Our Department of Mathematics at Beijing University is No. 1 in the country, and we cannot be defeated by a physics practitioner."

At this time,

I don’t know who leaked this problem. The students of the entire mathematics department are all in a crazy stage for this problem. After all, Xu Mang put forward it. If anyone can solve it, then this person will be a master. Stand out in the mathematics department.

Many people regard this opportunity as a stepping stone to their own success. Unfortunately... they overestimated their own strength and at the same time underestimated Xu Mang’s **** attributes. Facing this temporarily unsolvable problem, many people collapsed. Up.

The former four talents are already far away in the United States, and the current four talents, except for two teams who entered the national math competition team, the other two are sitting together in the library, solving mathematical problems provided by Xu Mang.

The combination of these two people has aroused the attention of many students. Although the so-called four talents are a kind of nickname by everyone, they do not have the corresponding strength, and they even mix a lot of nicknames. These four people almost represent Beijing. The highest knowledge of the Department of Mathematics.

but...

The two of them were desperate at the training base, and the other two were not much better. There was no solution to them. Although they understood the physical phenomena, they would not describe them.

This day ~www.wuxiaspot.com~The Department of Mathematics of Beijing University has experienced the darkest four hours, and no one knows what to do next.

And at Fuda,

Xu Mang’s alma mater,

As the second place in the country, the Department of Mathematics of Fuda University did not perform well. After knowing that Xu Mang had provided such a problem, almost no one would be unable to solve him. The legend of Xu Mang still circulated in the school.

Director Ouyang Fei looked at a question on his computer screen with a helpless smile on his face, Xu Mang...it was too messy, what was he thinking?

this day,

These four hours,

Everyone is thinking about a problem.

How to solve it?

......