Although there are only five questions in this test paper produced by Xu Yun himself, the questions alone are very complicated to read, and each question contains a variety of mathematics courses and has a trap that is not easy to see.

In particular, the last proof problem is the more famous whole point problem in a circle in number theory.

The entire answering time is 24 hours, and the information can be consulted at will.

However, since Xu Yun dares to adopt this form, he must have absolute confidence in his questions.

Not to mention that they want to consult relevant information, even if candidates go to consult their own tutors, it is impossible to have an answer in a short time.

It is no exaggeration to say that the solution to the last proof problem can be published in the core journal of the Annals of Mathematics.

Of course, he didn't expect any candidates to be able to solve it, mainly by looking at their solution ideas and processes, to judge the candidates' understanding of mathematics and their talents.

Since the content of the question is open to the whole network, in addition to the candidates who download the question for the first time to try to answer it, many netizens also want to see what Xu Yun's question is like.

Among them, there are some math teachers and professors.

It's just that after reading these questions, almost everyone fell into a state of confusion.

My mind was filled with question marks for a moment.

Who am I?

Where am I?

What am I doing?

All were impressed by the difficulty of this paper.

In just a few minutes, the hot search of the topic of prohibiting Xu Yun from taking the college entrance examination became the top of the hot search list.

A lot of people post in it to show their support.

"I'm ashamed of my alma mater, I don't even understand what these five questions mean."

"Is this really a question that can be solved by a research institute, let alone a twenty-four hour solution, even if it is twenty-four days, it will still be useless!"

"I am a Ph.D. in the Department of Mathematics, and after reading it a few times, I have a little idea of how to solve the first few questions."

"I'll tell you a terrible thing, these questions can be sent papers."

"Could it be that Professor Xu doesn't want to recruit graduate students at all, can anyone answer such a difficult question?"

"The admission criteria do not mean that all the questions must be completed, but it depends on Professor Xu's ideas."

"I really hope that Professor Xu will not take the college entrance examination in the future, otherwise I feel that it will be difficult to score 50 points in mathematics."

"Agreed."

"Not only the college entrance examination, but also the graduate school entrance examination must kneel on the spot in the face of such a statement!"

Originally, netizens were still very interested in this matter, and wanted to see which two people were so lucky to become Xu Yun's graduate students in the end.

As a result, after seeing this test paper, I felt some sympathy for the prospective graduate students who signed up.

Spend twenty-four hours doing a test paper like this, and I don't know how many brain cells will die.

However, everyone on the Internet is talking about it, and offline freshmen who really hope to be admitted to Xu Yun's graduate school have decisively started the retreat mode to calculate these questions after getting the questions.

Since the regulations of this examination are not too different from the Mathematical Modeling Competition of the Higher Education Society, although it is not allowed to discuss the questions in the examination paper, you can read the materials by yourself.

Some people even use artificial intelligence stupidity.

It's a pity that the AI permissions that ordinary people can access are only version 2.0, not to mention that the entire exam system is still stupidly developed.

Naturally, there could not be any information available.

Boring time often passes very slowly, but 24 hours is far from enough for candidates.

So much so that when I was doing the calculations on the scratch paper later, I felt more and more that time passed quickly.

Soon it was the next morning.

……

……

September 9, 2012, Jingzhou City, Jingzhou University, Institute for Advanced Study of Mathematics, Member Office.

Xu Yun was wearing a relatively casual and loose clothes, sitting in front of the computer and opening the examination system developed by Clumsy.

At this time, it was close to nine o'clock in the morning, and twenty-four hours had passed since the release of the test papers at half past eight yesterday, and according to the normal situation, Benben should have completed the first round of review.

Next, he only needs to choose the two most satisfactory candidates from the selected examination papers.

"It seems that this test paper has really stumped many people, and I hope there are good candidates."

Xu Yun couldn't help but laugh dumbly when he saw the total number of submissions displayed on the screen, and whispered softly.

Because the number of successfully submitted test papers is a big difference from the number of registrations, that is to say, many people directly chose to give up taking the test after seeing the test papers yesterday, or did not submit the test papers on time after the collapse of their mentality.

And this just proves that he chose to recruit people from colleges and universities across the country, which is a very correct choice.

Otherwise, it will be difficult to recruit graduate students with high talent in mathematics only in Jingzhou University.

After looking at it next, Xu Yun found that Benben had automatically posted most of the successfully submitted test papers, and there were only more than 100 copies in total that came to him and needed him to review them personally.

Seeing that this is not a lot of work, Xu Yun has nothing to say.

Click in and start reviewing it carefully.

Determine the candidate as soon as possible, so that the other party can report to Jingzhou University as soon as possible and start the teaching mode.

Speaking of which, although Xu Yun has written a lot of papers and participated in hosting a number of key projects, it is the first time for him to review the test papers as a correction teacher, which is a relatively novel experience.

I have to say that the test papers that can make artificial intelligence stupid and stay are really surprising.

Although he did not complete the answers to the questions in the test paper, he had a clear and clear idea, and many of the steps and processes were also very remarkable, indicating that his thinking in mathematics was not fixed by the textbook, and he could flexibly use it and apply it according to his own ideas.

To put it simply, it is to be able to truly control mathematics, rather than being led by the nose by mathematics.

As time gradually passed, when Xu Yun was suddenly attracted by one of them after reviewing nearly half of the test papers, his eyes suddenly revealed a little strange light.

This shows that he is interested.

Carefully review the answering process of this test paper from the beginning, and nod slightly in approval from time to time.

"It's kind of interesting."

He found that the test paper he was reviewing had no problems with the answers to the first four questions, and the whole point of the circle of the last question also gave his own solution ideas.

And he also used the topological group theorem he proved, which can be said to have been deliberately studied and studied.

It is no exaggeration to say that if you give the other party more time and the proper guidance of the mentor, I believe that the other party will be able to complete the proof of the whole point in the circle thoroughly.

At that time, the gold content of this paper will be no problem at all to submit it to the Annals of Mathematics.

Thinking that one of his two graduate students had not yet been decided, Xu Yun's mind immediately became active.

After clicking on the other party's registration information, I found that this student was from Imperial Capital University.

His name is Zhang Yang.

Xu Yun remembered the name, and then continued to review it.

At noon, he did not go home for dinner, but went to the school cafeteria, and after finishing the meal, he found a place to sit down, so that it can be said that he blended in perfectly, and no one would have thought that there was a full professor sitting there.

The main Xu Yun never cared about his age, let alone deliberately changed his dress in a mature direction.

In some ways, he was dressed like a college student at school.

And that's a testament to his potential.

After eating, he returned to the office, and in the afternoon, Xu Yun was busy for another two or three hours to finally review all the test papers.

In addition to Zhang Yang from Imperial Capital University, the other confirmed student happened to be from Jingzhou University.

His name is Li Youzhi.

Although Li Youzhi is slightly worse than Zhang Yang, he is also the top of the short man.

In short, he is very confident that under his teaching mode, it will not take long for the two of them to complete all the content of the graduate level.

At that time, I will go directly to the doctoral program.

It can be said that the two of them can be admitted to Xu Yun's graduate school, which is equivalent to saving a lot of time.

"I've finally decided on the final candidates, but I didn't expect that I would have my own students."

Looking at the list of two people he selected on the screen, a smile appeared on the corner of Xu Yun's mouth, and he muttered in a deep voice.

After all, he really hadn't thought about taking students before that.

You must know that this is different from teaching undergraduate students, and graduate students have the meaning of a master accepting apprentices.

Since you have recruited someone to get started, you need to be responsible for it.

But just as he was about to announce the list to the outside world, a familiar voice suddenly sounded outside the door.

"Professor Xu, won't I bother you now?"

Xu Yun heard Tang Yanshan's voice, and hurriedly got up and walked over to open the door without caring about the matter at hand.

"Teacher Tang, you're here."

"Sit down."

For himself, the first math teacher in college, Xu Yun is grateful from the bottom of his heart.

Although he always felt that it was awkward to be called Professor Xu by Tang Yanshan, he couldn't stand Tang Yanshan's insistence and had to give up in the end.

And he directly called the other party, Mr. Tang.

Tang Yanshan still has that kind and smiling expression, so that students know that they are easy to get along with at first glance.

In front of his most proud student, Tang Yanshan didn't hold back anything, and walked directly to the sofa next to him and sat down, obviously there was something.

After getting along for such a long time, Xu Yun also has a relatively clear understanding of Tang Yanshan's character, and if he doesn't have something to say, he rarely comes to his office.

After all, for mathematicians, proofs of all kinds of mathematical problems require excellent inspiration.

If the train of thought is interrupted, it will inevitably prolong the progress of the proof.

For this reason, Xu Yun simply took the initiative to ask: "Is there something wrong with Teacher Tang coming over today?" ”

"Well, it's fine."

When Tang Yanshan heard this, he first said something casually, and then paused for two seconds before moving on.

"I read the test paper you came out, and the difficulty of those questions is not small for a freshman in the first year of graduate school."

Hearing Tang Yanshan talk about this, Xu Yun smiled and said: "The difficulty of the question is indeed a little higher, but fortunately, someone has solved it quite ideally." ”

"Oh."

"So you've finished grading the test papers?" When Tang Yanshan heard this, he immediately asked in his heart.

Xu Yun naturally didn't think much about it, and said honestly: "I just selected two students after the correction, and I was about to announce the results." ”

"If you can take a fancy to you, these two people should be very good, right?"

"It's really good."

Xu Yun nodded at Tang Yanshan's words, and introduced these two people with a smile on the corner of his mouth.

"There is a man named Zhang Yang from Imperial Capital University, and he has the most steps to solve the problem of the whole point in the last circle."

"There is also a student from our Beijing University, named Li Youzhi."

As Xu Yun's words fell, Tang Yanshan, who was still very calm, suddenly became a little excited.

There were smiles on his face, too.

"Great."

"I knew that Dazhi had hope, and you really took a fancy to him."

Listening to all of Tang Yanshan's words, Xu Yun also felt a slight difference in his heart.

Listening to the meaning of this, Tang Yanshan seemed to know Li Youzhi.

Quickly thinking that the other party was a student of Jingzhou University, he hurriedly asked, "Could it be that this Li Youzhi is your graduate student of Mr. Tang?" ”

When Xu Yun said this, Tang Yanshan looked a little embarrassed.

"Dazhi is indeed my dug to our Beijing University, originally I thought that he would ask you more for advice when the time comes, but I didn't expect you to just decide to recruit graduate students, so I let this kid sign up."

"I didn't expect him to be quite competitive, and I am optimistic about him in vain."

Speaking of which, Xu Yun finally understood what was going on, but he didn't expect that there was such a relationship here.

And if you talk about it from Tang Yanshan, this Li Youzhi is still his junior brother.

But now this junior brother has become his student again.

The relationship is really messy.

But thinking that Tang Yanshan should have come over today specifically to inquire about the results, Xu Yun was also a little crying and laughing in his heart.

"Teacher Tang."

"If you want to ask about the results of the exam, just say no, and I still need to go around in circles."

"Aren't I afraid that you will be embarrassed, and besides, even if that kid is not strong enough to become your graduate student, I will ask him to consult you, and you still won't teach." Tang Yanshan was obviously in a very good mood at the moment, and after saying this with a smile, he got up and planned to leave: "Okay, you can go about your own business, I won't continue to bother you here." ”

"Then Mr. Tang, you go slowly."

Seeing this scene, Xu Yun didn't hold anything, and said a word of concern to Tang Yanshan's back, and then returned to his computer.

Xu Yun can be said to have no care about his graduate school background.

As long as the other party completes his test paper, he is his Xu Yun's student.

At the same time, this will also be the other party's biggest background.

In fact, he originally thought that if there were good seedlings, he could appropriately increase the number of graduate students.

After all, compared with completing the task, it is also very good to train a few more talents for the domestic mathematics community.

Not long after, after he officially announced the list, he sent notices to these two people and their schools respectively, asking them to transfer their files to Jingzhou University as soon as possible and pack up their things and return to school.

Of course, in fact, only Zhang Yang needs to do this, after all, Li Youzhi is a student of Beijing University.

After the list was announced on the Internet, it naturally aroused the enthusiasm of many netizens.

Originally, when they saw the content of the test paper yesterday, they thought that Xu Yun didn't want to recruit graduate students at all, but they didn't expect the list to be announced today, doesn't this mean that these two people completed the test paper on time.

Thinking about this matter, many netizens also called it perverted, and never thought that there would be Crouching Tiger, Hidden Dragon among the graduate students.

It can only be said that Xu Yun's achievements at the beginning were too high, so that many geniuses seemed less genius.

But in fact, these people are also unattainable heights for ordinary people.

Both Zhang Yang and Li Youzhi were very excited after learning that they had been admitted to Xu Yun's graduate school.

Even here at Imperial Capital University, Tang Gu Cong himself was happier than his student Zhang Yang.

Although it is to send the genius of his school to Beijing University, he has no dissatisfaction when he thinks that after Xu Yun's teaching, he may become the mainstay of the domestic mathematics community in the future.

With the full cooperation of the school, various procedures were quickly completed, so that Zhang Yang could report to Beijing University as soon as possible.

……

The time soon came to Monday, the Institute for Advanced Study of Mathematics of Jingzhou University, and Xu Yun was looking at two personal files in the office.

In front of his desk, two boys stood.

Except for Zhang Yang, who is wearing myopia glasses on the left hand side and looks very restrained, Li Youzhi next to him looks obviously much stronger, and from the perspective of facial expressions and body movements, he is obviously more extroverted than Zhang Yang.

After a while, Xu Yun put down the file in his hand and had a clearer understanding of his two students.

What surprised him a little was that this Zhang Yang from Imperial Capital University was actually a student of Tang Gu Cong.

In addition to being a well-known mathematician in the field of number theory, the other party also came to be a defense judge when he graduated from his bachelor's degree and defended his graduation.

Zhang Yang belongs to the kind of students who are obsessed with mathematics, and can even skip food in order to solve a problem, and do not like to communicate with other people.

It's a bit like Perelman's style.

On the other hand, Li Youzhi is not only more talented in mathematics, but also has a similar personality to a normal person.

Of course, he didn't say that Zhang Yang's character was bad, but if it was possible, he also hoped to let Li Youzhi guide him.

The thoughts raced through his mind, and he looked up at his two students.

"I have found you a study room in the High Court, where you can study or go to the library, and if I am not there, you can also go to the other professors in the High Court for advice."

Because Xu Yun is a member of the Institute for Advanced Study in Mathematics, the way of leading graduate students is definitely different from that of other professors.

Let Zhang Yang and Li Youzhi stay in the high school, but also to quickly grasp the knowledge of the graduate level and grow up.

Naturally, the two of them would not have any objections to their mentor's arrangement, and hurriedly nodded and answered.

"Got it, mentor."

"Then what are we going to do next, Mentor?" Compared with the restraint shown by Zhang Yang beside him, Li Youzhi took the initiative to ask in addition to answering.

Hearing this, Xu Yun didn't sell it, and said with a smile: "In the next few months before the year, I hope that the two of you can complete all the courses at the graduate level, and jointly complete the proof question within the circle and publish a thesis." ”

"Don't worry."

"I'll guide you then."

Although Xu Yun said these words very calmly, the original smile in Li Youzhi's ears immediately turned bitter melon color.

Although he had thought that it would not be easy to be Xu Yun's graduate student before he came, he still felt a lot of pressure in the face of such an arrangement, but before he could say anything, Xu Yun's voice came again in the next second.

"When I was in graduate school, I did a lot more than that."

"You guys should be fine, right?"

In this regard, Li Youzhi and Zhang Yang hurriedly said that there was no problem, and Zhang Yang's eyes were more excited.

(End of chapter)