I Am the President of the University

Ludao University Haiyun Campus, also known as Haiyun Garden, is only separated from the main campus by a Furong Tunnel. Three colleges, namely the School of Mathematical Sciences, the School of Information Science and Technology, and the School of Software, are located here.

Room 204, Haiyun Teaching Building.

The classroom was very quiet, only the faint sound of chalk rubbing against the blackboard could be heard.

"Suppose X1, X2,...Xn, Xn+1 are taken from a sample of the population "

Professor Li Yong wiped the dust off his hands and smiled while facing the 51 students who were sitting attentively. "This question about the square root distribution is not difficult. Which student wants to come up and answer it?"

The mathematics students sitting below raised their heads and looked at the questions on the blackboard. Some were lost in thought, some scratched their heads and cheeks, and some looked at it blankly for a few times before burying their heads.

emmm…

What is this written about?

High school mathematics is different from college mathematics. The former is mainly about calculations, while the latter is mostly about proofs.

And what’s interesting is that high school teachers say that you will learn it in college, but college teachers assume that it was taught in high school...

Li Yong looked around and noticed the expression on Lu Zhou's face sitting in the first row. His heart moved and he asked Lu Zhou, "Do you know this question?"

"Yes." Lu Zhou raised his glasses and nodded.

"Then come up and write down the process of answering the question." Li Yong smiled slightly, just in time to test Lu Zhou's mathematics level.

"good."

Lu Zhou stood up, walked directly to the podium, picked up the white chalk and started writing.

"X(n+1)~N(μ, σ2), X~N(μ, σ2/n) are independent of each other. The proof is slightly...

Assume X~N(0,1), Y~χ^2(n), and X and Y are independent, then T=X/√(Y/n)~t(n)…………

From the definition of t distribution above, we know ~t(n-1). "

The expressions on the faces of the students in the audience ranged from confusion to realization, while Professor Li Yong on the side had a flash of joy in his eyes.

After Lu Zhou finished answering the questions, he returned to his seat without saying a word.

Professor Li Yong walked up to the podium, with a smile on his face, and praised Chen Hao: "Student Lu Zhou's answer process was perfect. Even if I were to do it, the result would be almost the same."

Just as he said that, the smile on Professor Li Yong's face disappeared, and he said seriously: "There are 50 people in the class, but not a single student can do it. I don't want to encounter this kind of situation next time!"

Although the mathematics major is not a strong major at Ludao University, the 50 people in the entire class are not as good as one auditor. I really don’t know whether to feel lucky for my ability to see people or to feel disappointed with the classmates in the class.

The students below all had their heads buried, but Lu Zhou, who was sitting in the first row, didn't care at all.

"Why do we do this for this question? Let's look at the first step first..."

Professor Li Yong's voice continued to echo in the classroom. After almost ten minutes, the bell rang for the end of get out of class.

Several students in the audience breathed a sigh of relief and smiled, as if this was a life-saving bell.

"That's it for today's class. I will ask the study committee member to send this week's homework to the group later and collect it before the next class."

Li Yong paused for a moment and reminded him kindly, "Assignments are included in your regular grades. I hope there will be fewer students who fail this semester."

As soon as the words fell, the students' resistance immediately sounded below.

"No! Do you have homework again?"

"Teacher, it can really kill people!"

"Day 1025 of giving up math!"

"If God can give me another chance, I will definitely not check the box to obey the adjustment!!!"

When I was in high school, my teacher always told me that things would get easier when you go to college. However, the reality is that it is still difficult after going to college!

"The feedback from the students is very enthusiastic. It seems that everyone likes the homework I assigned. I may consider adding some more questions next time." Li Yong smiled brightly, and while packing his things, he told Lu Zhou who was standing beside him. He said, "Come to the office with me later."

"OK."

Lu Zhou didn't ask any more questions and followed Professor Li Yong out of the classroom. \b

After the two left, another round of discussion broke out in the classroom behind them.

"Who is this classmate who is here to listen? Do you know him?"

"I don't know him, but this classmate is so brave that he actually came to sit in on Lao Li Tou's class!"

"I think a great god has come. He looks very powerful. I don't know which academy he is from."

"Big furball, I think you're just here to show off! Who's the serious person to sit in on math?"

"+1, I feel like a pretentious person. I actually know this question, but I don't think it's necessary to answer it on stage. It's not good to touch too many chalk fingers."

There were also several students in the class who had participated in this year’s mathematical modeling competition, and soon a girl exclaimed:

"I know who he is! His name seems to be Lu Zhou, and he is the champion of this year's mathematical modeling competition!"

As soon as these words came out, the classroom became a little quiet.

…

Office of the Dean of Mathematics Department of Ludao University.

Professor Li Yong leaned back and said to Lu Zhou with a smile, "Student Lu Zhou, just sit down. You don't have to be too polite."

"How did you listen to today's class? Is there anything you didn't understand?" Li Yong asked with concern.

"I understand. Thank you Professor Li for your concern. I really have caused you trouble." Lu Zhou thanked him sincerely.

Lu Zhou still respects Professor Li Yong very much. I helped him apply for an auditor's pass and a library access certificate. Not only could he come and audit the mathematics department's courses, but he could also borrow books from the library. He took all of this into consideration.

"It's not worth mentioning how big the matter is." Li Yong chuckled, and then asked Lu Zhou with great interest, "From the mathematical model back then, it can be seen that you are quite talented in mathematics. You should learn it by yourself, right?" Less courses? What have you learned?”

Lu Zhou answered directly without thinking: "Mathematical analysis, advanced algebra, analytic geometry, ordinary differential equations, probability theory and mathematical statistics, statistics, abstract algebra, complex variable functions..."

Lu Zhou named the courses one by one like the names of dishes.

Li Yong, who nodded at first, became more and more shocked as he heard more. Finally, when Lu Zhou stopped, Li Yong's eyes were as wide as cowbells, "Did you learn all this by yourself?"

Good guy! This covers almost all digital undergraduate courses!

"Yes, I've basically finished learning, but I haven't fully understood some parts yet." Lu Zhou didn't understand why Professor Li Yong asked such nonsense, but he still answered truthfully.

"Comrade Lu Zhou, you really surprised me." Professor Li Yong shook his head and sighed, as if meeting Lu Zhou for the first time, he looked at him carefully from top to bottom.

Professor Li Yong then asked a few questions, and Lu Zhou answered them fluently. Now he believed that what the other person said was true!

Mathematics learning is like a technological tree with distinct layers. If you can’t learn at one level, you can’t read the bible on the next level. This cannot be pretended.

Professor Li Yong then asked: "Where is the progress of self-study now?"

"Just starting to learn differential manifolds."

"Differential manifolds..." Li Yong read aloud, and then suggested with a smile, "I recommend a few books to you: "Riemannian Geometry", Boothby's "Differential Manifolds and Riemannian Geometry", and A. Zee's " Einstein Gravity in a Nutshell", these three books are all good."

"I took note of it, thank you Professor Li!" Lu Zhou's eyes were a little anxious, and he just waited to find the resources for these three books online as soon as he got back.

Perhaps sensing Lu Zhou's plan, Li Yong shook his head and said, "Comrade Lu Zhou, I want to remind you that knowledge is most directly learned through books."

With that said, Li Yong stood up, took down three books from the bookshelf nearby, and handed them to Lu Zhou.

"Fortunately, I still have these three books here. Take them back and read them slowly. If you don't understand anything, you can come to my office and ask me."

Lu Zhou pursed his lips. Professor Li Yong was as enthusiastic as Principal Chen Hao. He kept these feelings in his heart.

"Your talent is very good, but the path of mathematics research is not easy. You must guard against arrogance and impetuosity, and study with concentration!" Professor Li Yong taught earnestly and sincerely.

As if thinking of something, Li Yong reminded: "Well, there are still papers, don't touch them now. I will assign tasks to you after laying a solid foundation."

Mathematics papers are difficult to write, but Li Yong is very optimistic about Lu Zhou. After a year and a half, he will be able to start writing papers.

"Thesis? This..." Lu Zhou touched his nose and said with some embarrassment, "Professor Li, speaking of thesis, I just wanted to ask you for advice."

Li Yong's eyelids twitched. He suppressed the shock in his heart and couldn't help but ask: "Paper? You don't still have the paper in hand, do you?"

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