Chapter 29 How can this be called a top student?
After the first exam, everyone had a judgement on the difficulty of the questions. The tense atmosphere in the exam room on the second day was no longer felt. As always, all three questions were basically answered before handing in the paper.

Xu Yuan was even quicker, finishing the test paper before ten o'clock and putting it down.

Use the remaining time to continue solving the problem of the intervals between infinite Carmichael numbers that was not completed yesterday.

After all, it is not his style to escape when faced with difficulties.

Half past twelve noon.

The bell for handing in the papers rang on time, and everyone walked out of the examination center feeling relieved.

Chatting and laughing with familiar people.

No matter what the result is, it cannot be changed at this point, and my mentality will definitely be much better than yesterday.

Lin Haoming was the first to rush to Xu Yuan. Just as he was about to say hello, he found that Xu Yuan looked very depressed, and did not have the relaxation and joy after the exam at all.

No matter how you look at it, it seems like I didn't perform well.

Worried that something had happened, he hurriedly asked, "Brother Yuan, why are you not happy at all after the exam?"

Ever since that night when Xu Yuan solved the inequality problem posed by Professor Qi in just two minutes, which gave Professor Qi and the whole class a small shock, everyone was deeply impressed.

I believe Xu Yuan will definitely become a member of the national team and represent the country in this year's International Mathematical Olympiad.

It would be a pity if we failed in the finals.

When Xu Yuan heard Lin Haoming's words, he turned his head and looked at him, then explained very seriously.

"It's still that Carmichael number. I've been calculating it for more than two hours today and still have no results."

Thinking of what happened in the morning, he couldn't help but sigh.

After devoting all my energy to the calculations for such a long time, the panel progress has only reached 15%, which is only a single-digit progress compared to yesterday.

The only consolation is that his proof idea is correct.

As long as we persist in our research, sooner or later the progress bar on the panel will reach 100% completion.

But he obviously overlooked one thing.

The three famous overseas mathematicians who proved that there are infinite Carmichael numbers nine years ago have not yet successfully solved the problem of the interval between infinite Carmichael numbers. He spent a total of more than three hours to complete 15% of the problem. If other mathematicians knew about it, it would probably cause a sensation in the mathematical community.

Lin Haoming listened to every word, and the words he had prepared in advance were of no use at that moment.

He held it in for a long time, and his lips moved for a while.

In the end, he swallowed his words back.

I thought it was Guan Yu's carelessness that led to the loss of Jingzhou, but who would have thought it was because of a straight hook used in fishing.

He nearly pulled his hair out because of these three questions in the morning, and was only barely satisfied with his test paper when it was almost time to hand it in.

But now tell him that people spend most of their time proving difficult math problems outside of the test papers.

This made him wonder.

If a competitive student like him is called a top student in the class, then what level is Xu Yuan?
I'm afraid they have all become gods.

Fortunately, he is strong enough inside, otherwise he would have been so upset that he would have given up mathematics.

A lot of thoughts flashed through his mind quickly at once, and Lin Haoming looked at Xu Yuan with more admiration.

Xu Yuan was still thinking about talking to Lin Haoming about his depression, but found that the other party had not responded for a long time. Although he was puzzled why someone who usually talked so much was so cold today, considering that his stomach was protesting and he could hardly bear it anymore, he had to quicken his pace and walk in front to get in the car.

When the brain is in a deep learning state, energy consumption is several times higher than usual, so it is inevitable that you will get hungry faster.

For this reason, he would prepare some midnight snacks in advance.

Otherwise I would wake up hungry in the middle of the night.

Zhang Yuhui had promised them before that he would pay for improved food standards for them after the exams, so they definitely couldn't miss this big lunch.

……

"You can eat as much as you want today, the teacher will pay the bill." Zhang Yuhui's face was full of smiles at the hotel dinner table. It was a rare occasion for him to let go and be so generous.

He has already received confirmation from Xu Yuan that he has successfully won the winter camp mathematics finals. Although he doesn't know the results of other people yet, he has at least reserved a place in the national training team.

It can be considered a bottom line.

In this way, even if others fail, he can still report back as the team leader.

So it's only right that you treat me to this meal.

Xu Yuan and the others naturally wouldn't be polite to Zhang Yuhui, especially since they had just finished the exam and were just letting themselves go.

When I heard this, I almost screamed on the spot.

"Thank you, Captain."

He took the lead in expressing his gratitude and started eating as soon as the food was served.

In the afternoon, everyone did not stay in the hotel. At Lin Haoming's suggestion, they chose to go out and appreciate the local customs and culture.

It would be a shame to stay in a hotel after such a hard trip to another province.

Of course, the operation is still led by Zhang Yuhui.

As for other teams at this reporting point, their team leaders will make different arrangements for them.

Some are still staying in the hotel rooms, while others are continuing to review.

Perhaps influenced by Xu Yuan's calm temperament, Lin Haoming, Li Mingliang and other members of the provincial team also seemed very calm, and no one took the initiative to bring up the topic of the final results.

So as to avoid spoiling the view.

Anyway, the results will be announced at the closing ceremony on the last day, so there is no need to calculate your score in such detail.

Besides, the gap between the participants in the finals is not very big, so it is difficult to determine the ranking even if you know your scores.

After all, only the top sixty can enter the national training team.

However, before the closing ceremony, they need to listen to a total of four academic reports over two days.

The slightly comforting thing is that the report starts an hour later than the exam.

From nine in the morning to twelve o'clock.

It also allows everyone to get up late and have a good sleep.

-

It is an old tradition for the Mathematics Final Winter Camp to hold academic reports after the exams.

Most of the invited lectures are members of the Mathematical Society Council and mathematics professors from famous universities.

The presentation session also includes questions from students.

In a sense, it also allows universities to demonstrate their strength in order to attract and recruit new students.

Currently, many provinces adopt the model of estimating scores and filling out applications, which makes it difficult for the admissions offices of various universities to play their role. For this reason, the competition for the five major subjects each year is the most intense.

In order to persuade desired students to sign admission agreements, various generous conditions are often offered.

2003 1 Month 16 Day.

Thursday.

At around eight o'clock in the morning, Xu Yuan came to the lecture hall with everyone else and sat down in a front seat. He was quite looking forward to the academic report in the morning.

They had received the list of academic reports yesterday and knew that the first speaker was from Qinghua's Department of Mathematical Sciences.

The topic discussed is modern number theory from the perspective of solving indeterminate equations.

Xu Yuan has always been interested in number theory, and recently he has been arguing about the Carmichael number interval problem. How could he miss such a high-quality mathematical academic report?

(End of this chapter)