My house collapsed since I became the top scorer in the college entrance examination

"In the end, only mathematics will accompany me." Xiao Ran sighed while finishing the questions.

Sure enough, women only affect the speed of my learning.

Mudd!

From today on, quit drinking!

After a few days of intense practice, he finally finished the thick five-year college entrance examination and three-year simulation. At the same time, he also took the time to read the book Advanced Algebra. Now he feels like he is going to take the freshman exam. There were no problems with the final exams of the advanced mathematics courses in the Department of Mathematics.

As for the results.

Not to mention that getting a score of 95 or above is considered trivial. This seems a bit too crazy, so it is considered average.

When it was time to return the book, Xiao Ran decided to go to the Magic City Library to return the borrowed book of Advanced Algebra, and borrow a few more books on random matrices to read.

Magic City Library.

This was Xiao Ran's first time going out since the holiday. He usually ordered takeout for meals, and then studied. His life was extremely difficult.

Sometimes, even he himself finds it a little incredible that he can endure this kind of loneliness and calm down to study.

But I have to say, this feeling of fulfillment as you watch yourself progress bit by bit is indeed a bit addictive.

Especially when the mathematical building that was originally like a mist dissipated little by little in front of him, revealing its mysterious and gorgeous veil, the sense of accomplishment was truly unprecedented.

Entering the library, I first went to the service desk to return books, and then went to the mathematics section. After searching around, I walked to the corner with three books: "Stochastic Matrix Theory - Mehta", "Probability", and "Matrix Analysis". corner of the wall.

The library today was much deserted compared to the past. Xiao Ran estimated that it was because of the cold weather and the winter vacation that there were fewer people willing to come to the library to read and study.

He took out his laptop and plugged it in. He still logged into station B and found the tutorial on random matrices. Xiao Ran put on his headphones and opened "Theory of Random Matrix". Listening to the teacher's explanation in the headphones, he read the new book without any distractions.

Study time always flies by, and it’s almost half past eight in the evening.

"Classmate, it's already half past eight, and we're closing the library." It wasn't until the librarian came over to remind him that Xiao Ran came back to his senses from the ocean of studying.

"Sorry, I forgot about the time." Xiao Ran stood up apologetically and packed away the books and notebooks on the table.

"At this point in time, can these books still be registered and checked out?" he asked sheepishly while packing them away.

"It stands to reason that the time has passed. Forget it, give me the book and I will register it for you." The librarian is an old man with glasses and gray hair.

Perhaps it was Xiao Ran's dedicated study attitude that impressed him, so he didn't find it too troublesome, and immediately said with a smile: "I have been working here for so many years, and I have rarely seen classmates who are as dedicated to studying as you."

"Thank you very much, uncle." Xiao Ran said sincerely, and handed the three books "Stochastic Matrix Theory - Mehta", "Probability" and "Matrix Analysis" to the librarian.

"Hey, random matrix, I rarely see college students studying this aspect now." The librarian took the three books and gave Xiao Ran a surprised look.

"Are you planning to use it as a graduation thesis topic? It's not easy to start with. You don't look like a graduate student at your age. If you are a college student, this graduation thesis topic will be a bit difficult for you."

"If you want to understand random matrices, you need at least a good foundation in probability, matrix theory in linear algebra, classic multivariate statistical analysis theory, and some complex integral calculations, such as Cauchy's integral formula, residue theorem, etc. .”

"Young man, if you want to write a graduation thesis, I think it would be better for you to change a topic."

The library man talked eloquently, and he was very familiar with various mathematical formulas and theorems, which made Xiao Ran scratch his head.

Damn it, are today’s librarians so good?

"Uncle, do you also understand random matrices?" Xiao Ran asked tentatively.

"Hey, I know a little bit about it. I studied blindly when I was young." The uncle waved his hand with a humble look on his face.

Xiao Ran didn't believe in evil, so he immediately asked the uncle some questions he encountered when learning random matrices today.

Unexpectedly, the uncle was really unambiguous and explained to Xiao Ran in a simple and profound way.

This explanation only lasts half an hour.

It wasn't until the uncle's mouth became dry that he said with some lingering meaning: "The random matrix is ​​not difficult to say, but it is not easy to say it is simple. If you are really interested in this aspect and want to learn the theory of systematic learning methods, you can take a look. "Spectral Analysis of Large-Dimensional Random Matrices" I wrote when I was young, you can combine the theorems in the book with the papers corresponding to the theorems, it may be helpful to you."

Xiao Ran:.

No, wait a moment? ? ! !

If I'm interested, can I take a look at the spectral analysis of large-dimensional random matrices you wrote when you were young?

Did I hear something extraordinary?

Xiao Ran looked messy.

What kind of god was this man when he was young?

"Uncle, what did you do when you were young?" he couldn't help but ask.

"Hi, I just teach at a university. I have nothing to do after I retire, so I came to the library to check the door." The uncle still had a cheerful smile on his face.

"Can I ask which university you are in?"

"Chendan, but I think I taught at Tongji for a few years, haha, not worth mentioning, not worth mentioning!"

What a sentence, not worth mentioning!

Xiao Ran was silent for a moment, and then sighed with some regret: "They say that the profession of librarian has hidden dragons and crouching tigers, and they really do not deceive me!"

This uncle is really something!

Xiao Ran decided to come to the library tomorrow and establish a good relationship with the library man. He must teach him a few things, at least about random matrices. He had to find a way to give him some money.

With such a great god standing in front of him, he would be really stupid if he didn't know how to seize the opportunity!

Old man, it’s time to gain experience!

In the next few days, Xiao Ran went to the library every day. If nothing happened, he would bring some cigarettes and wine to the librarian and ask for help. As expected, he won the favor of the librarian.

Of course, Xiao Ran's dedicated learning attitude and talent made him love talents.

In short, the uncle taught Xiao Ran everything he could about random matrices, as if he was treating him as a close disciple.

Under the uncle's guidance, Xiao Ran was like a hungry sponge, fully absorbing the uncle's knowledge about random matrices.

Every day, Xiao Ran's state is basically like this.

Knowledge +3!

Knowledge +3!

Knowledge +3!

Two weeks later, Xiao Ran happily took out a paper and said, "Teacher, I recently wrote a paper. Could you please give me some guidance?"

"Hey, you finished your graduation thesis so quickly?" The uncle took the paper with a smile.

"I've agreed that it's okay for me to give you guidance, but I've always hated it when people fooled me with fake papers. If your paper doesn't impress me, I won't be able to get my guidance in the future. .”

As he spoke, he took the paper and glanced at it, "Well, a discussion on the application of random matrices in multiplication - taking the proof of Stirling's formula as an example."

Um.

Um? ? ! !

The uncle's eyes suddenly widened.

It was like seeing a ghost!