Great Country Academician

At night, the breeze brings coolness.

Across the west coast, in the white room, a certain president with cool hair was staring sharply at the CIA director in front of him.

"Trash! After investigating for such a long time, activating so many resources, and spending so much money, you have not found anything!"

"So far, apart from knowing that the other party has launched a project related to nuclear energy, I don't know any other details. Waste, really waste!"

The director of the CIA defended innocently: "We can't blame us for this."

"In the past few years, many of the secrets we inserted into that country were cleared out, and when they were redeployed later, it is obvious that they still have no access to those core secrets."

"However, what we can confirm now is that Professor Xu played a key role in this nuclear energy project, or that this nuclear energy project was guided by him."

"In addition, through our investigation, we also found that Professor Xu is conducting research on lithium batteries. He acquired a material research institute and applied for an artificial SEI film in countries protected by international patents around the world. patent."

"And this patent is used to solve the lithium dendrite problem of lithium batteries."

"Of course, there are many patents of this type in various countries. We still don't know whether this patent can solve the lithium dendrite problem."

Hearing this, the president sitting opposite asked, "What is the probability of a possible solution?"

As a businessman who started as a politician, he has a certain understanding of lithium batteries. Although he does not know a lot and is not as good as a professional, his investment in various businesses for a long time has allowed him to know the biggest problem of lithium batteries. It is the lithium dendrite problem.

If this problem can be solved, the prospect of lithium batteries will be quite broad.

The director of the CIA shrugged and said: "It is difficult to know whether the other party has solved the lithium dendrite problem based on a single patent application document. It is difficult to determine whether the other party has not announced it or obtained a sample. .”

"According to the survey, the probability of this is not high, even less than one percent. The laboratory purchased by Professor Xu only has a capital of more than 10 million yuan. Converted into rice gold, it is about 2 million yuan."

"A laboratory of this level will basically only deploy about ten researchers and rely on some patents to survive. It can be said that it is almost impossible to solve the lithium dendrite problem."

"We must know that there are more than three-digit or even four-digit companies or research institutes all over the world every year. The laboratories are all studying the lithium dendrite problem, including our Albert Electric, which produces hundreds of millions of rice gold every year. investment, but so far there hasn’t been much progress.”

The golden-haired president pondered for a moment, and then relaxed a little: "So it's basically impossible?"

The director of the CIA nodded: "From the survey data, it is indeed the case."

Nodding his head, the president with a cool hairstyle continued: "Hurry up and investigate, I want to know what the nuclear experiment in the country opposite is researching!"

"In addition, let the media carry out propaganda, saying that the other party has violated international conventions and is studying news such as the proliferation of nuclear weapons, and at the same time the diplomatic side will follow up."

Xu Chuan, who has already fallen asleep, is naturally unaware of the arrangement on the Atlantic coast and the confrontation between the two great powers.

It was a quiet night. After waking up, he made a cup of coffee, and there was a textbook "Linear Algebra and Space Analytical Geometry" on his desk.

This is what I will explain in class this afternoon. Although he is very familiar with algebraic geometry, as a teacher, there is nothing wrong with preparing the lesson before class.

It doesn't take him much time. For this kind of basic books, simply flipping through them is enough.

And reviewing the past to learn the new, for mathematics, the lower the level of knowledge, the more important it is.

The morning time passed quickly. After ordering a takeaway and having a simple lunch, Xu Chuan brought the textbooks for teaching to Nantah University.

The location of the class was changed from West Building to Public Classroom No. 1 in Run Run Shaw Building. This is the largest public classroom on NTU Xianlin Campus, which can accommodate more than 500 people.

Most of the time, there are basically no seats here.

But today, the entire No. 1 public classroom is more than empty seats, not only the seats are full, even the stepped corridors of the public classroom are full of people.

Not to mention the entire classroom was packed to the brim, there were quite a few students standing in the corridor outside the classroom.

Although not all the students who came here have taken algebraic geometry, and many of them are not majoring in mathematics, many students who have not signed up for this course are also sitting here with their backpacks.

This is legendary.

That man has been breaking world records and making new history since IMO and IPHO competitions.

When he is standing here as a professor, everyone is curious about what kind of math class he will bring to them.

Of course, before the official class, everyone was discussing whether Xu Chuan would really come.

"Do you think Chuan Shen will really come to teach us?"

"It should be true, after all, Nandu Metropolis has confirmed it on its official website."

"But he's a Nobel Prize winner and a Fields Medal winner, and he still comes to teach undergraduates? Maybe it's just a name, and the class is his students?"

"Impossible, isn't this playing with everyone? Chuan Shen shouldn't do such a thing."

"Who knows."

"No! The teacher must be Kawasami, I have confidence."

"Make a bet, I bet fifty cents that Chuan Shen will come!"

"I'll make a tea egg!"

"I pressed a commemorative edition of Furukawa Iori!"

When Xu Chuan came to the No. 1 public classroom in Run Run Shaw Building, even though he had experienced many big scenes, he was terrified by the scene in front of him.

In the huge public classroom, there are crowds of students, even lecturers and professors crowded together, just like the morning rush hour of the subway in a small island country.

If the air circulation is not turned on, Xu Chuan even doubts whether the air in this classroom is enough for so many people.

Seeing him appear in the classroom, the crowd suddenly became commotion.

"Come, come, Chuan Shen, he is really here!"

"I took the high-speed rail for an hour, and the bus for two hours! It's worth it to see the God of Chuan with my own eyes!"

"Chuanshen is amazing! He actually came to teach us."

"Being able to listen to a lecture by a Nobel Prize + Philippine Award master once is worth it in this life!"

"Whoooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooows

In the classroom, following the appearance of Xu Chuan, the crowd cheered enthusiastically.

Many students held up their mobile phones and started snapping pictures, and some even forgot to turn off the flash.

Xu Chuan smiled and said, "I know everyone is very interested in me, but I didn't expect so many people to come today. I even saw the deans of our colleges sitting in the crowd."

Shrugging his shoulders, he continued: "Maybe it's because I haven't had a class for too long, and the school leader personally supervised me in the first class. After all, since I became a professor in the second half of last year, it's a bit strange to have the first class today. Competent."

As he said that, his gaze fell to a corner of the lecture theater, where Zhou Hai, Chang Ming, Dean Rong Zhizhuan and other professors and leaders of NTU gathered together.

Noticing Xu Chuan's gaze, they smiled and nodded in greeting.

After teasing the atmosphere, Xu Chuan continued, "Today's course is based on the textbooks of linear algebra and spatial analytic geometry."

"Because the students here range from undergraduates to postgraduates, the content of the explanation is mainly based on the basics. Maybe some students will wonder why I teach such a fairly basic course."

"For this question, if you listen carefully in the next class, I think you should gain something."

"Okay, let's start the class next. Everyone must have previewed it yesterday, so now open the "Linear Algebra and Space Analytical Geometry" textbook, and let's start with linear equations."

"A system of linear equations is a system of equations in which each equation is one-time with respect to unknown quantities (for example, a system of equations of degree 1 in 2 variables). Our country is at least 1,500 years earlier than the whole world in the study of systems of linear equations. In the early AD "Nine In the Equations Chapter of Chapter Arithmetic, there is research on linear equations. Students who are interested can go and have a look."

"Linear equations are widely used. The well-known linear programming problem is to discuss the problem of linear equations with certain constraints on the solution. It is widely used in geometry, algebra, etc."

It was not for nothing that he had served as a professor at Princeton for more than ten years in his previous life.

For teaching, Xu Chuan has his own method.

For the mixed open class groups of undergraduates, postgraduates, and even doctoral students, from the shallower to the deeper, but it is not completely in-depth, and the final depth is kept at a level where undergraduates have a vague understanding, and postgraduates and doctoral students have self-inspiration , is his grasp of teaching knowledge.

The one-hour public class passed quickly. Xu Chuan explained, glanced at the students in the classroom who were still writing hard, and put down the chalk in his hand.

"That's all for today's lesson."

For today's class, Nantah University specially arranged two projectors in this public classroom, so that students in the back row can see the blackboard and lecture content in front more clearly.

Hearing the voice, the students sitting in the classroom, especially the undergraduates, finally breathed a sigh of relief.

Although university professors are pretty much the same, flipping a book is faster than turning a face, but this is the first time they have encountered a textbook that has turned nearly a third of a textbook in one class.

Starting from the linear equation system, to the determinant and inverse matrix of the square matrix, to the matrix and its elementary transformation, geometric space, n-dimensional vector and linear equation system

After a class, these undergraduates feel that their minds are full of knowledge.

But what made them feel even more amazing was that despite all the material taught by the man at the podium, they didn't get dizzy and accept the feeling of incompetence.

Although many people gradually lost track of the rhythm in the middle and later stages, sometimes Xu Chuan's words made them realize suddenly, as if this place corresponds to the previous one.

It's like reading a novel. When the author lays a foreshadowing, the readers don't know it at first, but when they are connected after dozens of chapters, everyone will suddenly understand that it was mentioned earlier here.

"It's no wonder why Chuan Shen said before the lecture, why do you need to talk about these basic things." In the lecture hall, a doctoral student put away the hand that recorded the last stroke, and couldn't help sighing:

"I finished "Linear Algebra and Spatial Analytical Geometry" a long time ago, and I always thought that I learned it well. I didn't expect that after listening to this class today, I discovered that there are still many things I haven't learned in it."

"Including some technical uses, which I have never learned before, and I have never thought of it."

The friends around him nodded and agreed: "Compared with Chuan Shen, the professor who taught us algebraic geometry before is too far behind. It's really incomparable."

The doctoral student smiled and said, "How does this compare? One is a Philippine Award + Nobel Prize winner, and the other is just an ordinary university professor."

The friend around him shook his head and said, "No, that's not what I'm talking about, but the attitude, skills, and other things in teaching. You know what I mean."

The doctoral student nodded in agreement and did not speak again.

He also came from an undergraduate student, and in the current environment, many university professors are perfunctory when teaching students, and many of them even directly ask their assistants or students to come.

For this phenomenon, most students who read the doctoral stage have experienced it.

However, Xu Chuan gave them a completely different feeling.

Of course, this may have something to do with the fact that today's class is the first class, but in any case, he was greatly inspired here today.

Those skills, experience, methods, the application and association of knowledge points, etc., cannot be learned in books or even from other professors.

For these graduate students who have already read the doctoral stage, they are very clear that these are the most important.