Chapter 64 I wrote a paper [First order]

There are four professional courses in the first semester of the freshman year of mathematics and applied mathematics, namely mathematical analysis, advanced algebra and spatial analytic geometry, as well as derived algorithms and programming.

For ordinary students taking the college entrance examination, these courses are relatively unfamiliar and need to be studied seriously from the beginning.

But math competition students like Xu Yuan and Liu Yang have already been exposed to and mastered it in advance.

It is natural to listen to the class with ease.

This is why Li Zhenya was so happy when he learned that Xu Yuan won the gold medal with full marks in the International Mathematical Olympiad.

At least in the future, if I encounter something I don’t understand, I can ask for help in the dormitory.

Don't worry about failing the course at the end of the semester.

Since Xu Yuan also had to pursue a degree in engineering mechanics, it would be impossible for him to miss every class if he was running between the two. So as long as he got enough credits, he would not be affected by the teacher's roll call in class.

The exciting and unforgettable military training has ended, and the new week of university courses has officially entered the right track.

2003 9 Month 15 Day.

on Monday.

In the morning, there was a flurry of activity in the dormitory of the third class of the Mathematics Department.

"Hurry up, this is our first math analysis class today and I don't want to be late and get called out by the teacher."

Li Zhenya swiftly got out of bed, sat on a chair, looked for his shoes and shouted to Liu Yang and Wang Haitao who were still getting dressed. He didn't expect to get up late on the first day of class after the military training.

"Why is there a class at 8 a.m.? Can't it be scheduled until the second period in the morning?"

"The department must be trying to make us wake up early."

"Looking at the time, it's too late to have breakfast."

"I still have some cookies in my cupboard. I'll use them to hold you over until get out of class is over."

Wang Haitao and Liu Yang kept complaining at this time, and could only say that high school teachers are all liars.

Even after entering university, I still have heavy and stressful study tasks.

It's impossible to relax.

Unless you don't mind having your science points deducted.

While several people were talking about this, Li Zhenya suddenly noticed something very important.

"Where is Xu Yuanren?"

I raised my eyes and looked towards Xu Yuan's bed, only to see that there was no one there.

Just at this moment, the dormitory door was pushed open from the outside, and Xu Yuan walked in carrying a few bags of buns and soy milk.

He put the things on the table and said, "I stopped by the cafeteria to buy breakfast after my run this morning."

"Brother Yuan, I love you so much!"

Wang Haitao was so touched when he saw breakfast that he immediately rushed over to give Xu Yuan a hug.

"Go brush your teeth and wash your face. You can have breakfast on the way." Xu Yuan dodged and said with a smile.

"We'll give you the money later."

Li Zhenya, Liu Yang and the others did not waste any more time. They said something and hurriedly took their toothbrushes and towels to wash up.

Because Xu Yuan was a recommended student, in addition to tuition exemption, he also had a fixed amount of free meals in the school cafeteria every day.

Basically he can eat whatever he wants by himself.

However, if you want to spend more than the meal quota for others, you still have to top up the money yourself.

He had already eaten in the cafeteria, so he packed up the things he would need in the morning and waited for Li Zhenya and the other two to go to class together.

In addition to the math analysis textbook from the morning, he also casually put a USB drive into his pocket.

As for the content, it was naturally the proof of the interval problem between infinite Carmichael numbers that he had taken time to write during the twenty days of military training. He planned to visit Tang Shihong after class.

five minutes later.

The four of them set off for the classroom.

On the road, you can see many classmates eating while walking, obviously they are all exhausted from the early morning rush.

Xu Yuan is very familiar with the freshman mathematical analysis course, and normally whether he attends it or not will not affect the midterm and final exams.

But considering that this is the first professional course after all, I still need to get familiar with the faces at the beginning.

-

The teacher of the mathematical analysis course is a man. Because the pace of the class is faster than that of high school, everyone must concentrate and stay focused. Otherwise, if they can't keep up, they can only find ways to review after class.

What surprised Xu Yuan was that Liu Yang was also listening very seriously.

It seems that he wants to consolidate his mathematical knowledge.

The whole class lasted until 9:50, and everyone finally felt relieved.

"The difficulty of mathematics has doubled since I entered university. I am beginning to regret choosing this major."

Wang Haitao picked up the textbook, stood up, turned around and complained to Li Zhenya beside him.

"We just talked about the set of real numbers today. Compared with the advanced algebra, statistics, probability theory and other courses we will learn later, this is already a relatively simple content." Liu Yang patted Wang Haitao on the shoulder and said so to comfort him.

Li Zhenya was still optimistic. He took over the conversation from the other two and responded calmly.

"There are two gold medalists in the International Mathematical Olympiad in our dormitory. At worst, we can ask them for advice more often."

"I just don't believe I can't learn it."

After saying that, they didn't stay in the classroom for long and hurried towards the gymnasium.

Unlike the tense and stressful math analysis classes, college physical education classes are much more relaxed and comfortable.

At least no teacher from other subjects will suddenly come over and say that the physical education teacher is sick and cannot teach today.

It was almost eleven o'clock when the teacher announced that the students were free to move around.

Considering that he still had some important things to do, Xu Yuan asked Li Zhenya and the others to help take the textbooks back while he went to the office building where Tang Shihong was.

……

Not long after, Xu Yuan came downstairs but stopped where he was, and did not choose to go upstairs directly.

Because at this time he remembered something.

Although he knew which building Tang Shihong's office was in, he was not sure of the specific floor and room.

After all, as a second-level full professor, Tang Shihong's main task is to participate in academic research and supervise graduate students, and he rarely teaches undergraduate students.

In addition, he only bought a mobile phone during the summer vacation, and did not have Tang Shihong’s computer number saved.

"It seems I have no choice but to trouble you, Senior."

As Xu Yuan's mind raced, he quickly thought of a person. He murmured something to himself, then quickly took out his cell phone and called his counselor, Lu Chunming.

As Professor Tang’s graduate student, the other party must know this information.

Originally, Xu Yuan just wanted to ask about the specific location of the office, but not long after he hung up the phone, he saw Lu Chunming walking over.

Seeing this, Xu Yuan hurriedly took a few steps forward, feeling a little embarrassed.

"The counselor has wasted your time."

"Just call me Senior Brother from now on, and don't be polite."

"It's all little things."

"I happen to be here too, so I'll take you upstairs." Lu Chunming waved his hand and replied with a smile.

As Tang Shihong's graduate students, they can all too sense their mentor's mood changes.

Ever since the tutor was invited to attend an academic seminar at the mathematics winter camp, he has been talking about Xu Yuan's name since he came back.

I love it to the extreme.

You should know that even Tang Shihong’s outstanding graduate students have never enjoyed such treatment.

Although Xu Yuan is still an undergraduate student now, considering that he has chosen mathematics as his major, I believe it won't be long before he will be a junior of these graduate students.

It's completely normal for your child to have an attitude that's a little different from other students in your class.

"Thank you, senior brother."

After listening to the other party's thanks, Xu Yuan followed Lu Chunming to Tang Shihong's office.

It is worth mentioning that the other party did not ask him too much about the reason why he came to see Professor Tang. It was not until he knocked on the door and walked into an office that he spoke to the person inside and reminded him.

"tutor."

"Junior Brother Xu Yuan is here."

Tang Shihong, who was working in front of the computer, immediately stopped what he was doing and looked up when he heard the words.

"Hurry up and sit down. Have you adapted to the pace of college?"

After his eyes automatically passed over Lu Chunming and fell on Xu Yuan, he hurriedly asked the other party to sit on the chair next to him, showing great enthusiasm and concern.

Even though Lu Chunming had been mentally prepared, he couldn't help but be extremely surprised when he suddenly saw his mentor still smiling like that. He even felt a little envious of this junior fellow apprentice who had not yet joined the school.

Normally when Professor Tang taught them, he never showed such a concerned and joyful expression.

"I'm fine, thank you Professor Tang for your concern." Xu Yuan responded with a smile.

After sitting down on the chair next to him, he heard Tang Shihong ask:
"What's the matter with you coming to see me today? Tell me."

Hearing this, Xu Yuan did not hesitate and directly stated his purpose.

"That's right, Professor Tang."

"Well, I wrote a math paper and I'd like you to take a look at it for me."

As he finished speaking, Tang Shihong frowned slightly. He didn't expect that Xu Yuan didn't listen to his words.

When Xu Yuan came to listen to his open class before, he advised Xu Yuan to focus on professional courses and lay a solid foundation in mathematics first, otherwise aiming too high would only waste time and talent.

Only a few months had passed, and instead of studying difficult mathematical problems, Xu Yuan had started thinking about writing a paper.

As a student of Qinghua, it is not surprising for undergraduate freshmen to write papers, after all, everyone is so outstanding.

But it was a little too early for Xu Yuan.

Tang Shihong paused for two seconds, took a deep breath, and then continued to ask: "Which direction of the paper?"

"Number Theory."

……

"Chunming, please help Xu Yuan." Upon hearing this, Tang Shihong directly assigned the task to Lu Chunming.

Xu Yuan was about to say that it was the Carmichael number problem that he studied last time, but when he saw Tang Shihong looking at the computer screen again, he had to hand the thing to his senior brother Lu Chunming next to him.

"Then I'll trouble you, Senior Brother. Both the Chinese and English versions are in there, but I didn't have time to print them out."

"It's okay, come over here." Lu Chunming said as he took the USB drive.

As a graduate student, he naturally wrote quite a few papers, some of which were even included in SCI journals in the second zone of HUST.

It is easy to guide a freshman's paper.

"No wonder Professor Tang likes you so much. You've already completed a math paper at the beginning of the semester. This kind of result is far better than when I was an undergraduate."

Lu Chunming sat at the office desk next to him, inserted the USB drive into the computer, and communicated with Xu Yuan while waiting for it to be read.

After quickly opening the only paper manuscript inside, Lu Chunming's expression froze instantly when he saw the title of the paper.

"Proof on the problem of intervals between infinitely many Carmichael numbers."

Suddenly, I had a vague feeling that I seemed to have been a little too arrogant just now.

……

(End of this chapter)