The Science Fiction World of Xueba

Unknowingly during the one-hour interview, after inspecting Ai Ai's professional skills, Pang Xuelin smiled and said: "Ai Ai, the last question, can you tell me why you chose mathematics?"

Ai Ai pondered for a moment and said: "Based on my superficial understanding, no subject has changed the way I look at things as profoundly as mathematics. I learn mathematics very slowly because it is difficult for me to accept some mathematical ideas, or The philosophical ideas behind mathematics, but once accepted, it feels completely new. Especially when I understand a proposition or concept, I am often amazed by mathematics.”

"When I was studying abstract algebra two years ago, those abstract definitions did not surprise me. But the correspondence between Galois theory and its later application to ruler-compass construction and root-finding formulas really surprised me. From the intelligibility of the group to the ability to find the root, things that are irrelevant are connected together, and I feel that I have discovered the truth of the world!"

"Learning commutative algebra, I am surprised that people can study so many structures and theories in a small ring. When we discover ideals, we have quotients; but after discovering prime ideals, we have localization. The sub-world has become extremely exciting. Especially the Krull ring, which has exhausted eighteen martial arts, is amazing."

"I have studied category theory for a long time. At the beginning, I really didn't know what to do, to give a new name? But when you accept the setting, the more you learn, the more interesting it becomes. The teacher once said: Category It is an abstraction that is one-dimensional higher than mathematics. This sentence was completely incomprehensible to me who only knew the basic definition at the time. Looking back now, it really feels like this.”

"Algebraic topology is also a very interesting subject. When I first learned it, the teacher talked about it all the way from the basic definition of homology to K-theory, with a complete Bundle classification theory, and finally wrote 700 pages of notes. Learning to collapse..."

"Combinations are more interesting. Combinations are often counting, but how to count is very important. Looking at it from different perspectives directly affects whether you can 'count' a number. Under different perspectives, the same number will Connect with different things. Can you imagine that the number of elements in a symmetric group Ridge element is related to flipping a coin? There is an essential internal connection in mathematics between such irrelevant phenomena... ..."

...

"So personally, the mystery of mathematics is greater, which makes me want to explore it. Of course, Professor Pang, you are also an important reason?"

"I?"

Pang Xuelin pointed to himself and said in surprise.

Ai Ai said with a smile: "I am your loyal fan. It is the happiest thing for me to be able to study under you. And I also believe that following you,

I can go further on the academic road in the future. "

Pang Xuelin smiled and said, "Are you so confident that you can pass the interview? You must know that you have many competitors."

Ai shrugged and said: "I have tried my best. Whether I can go to graduate school under your hands or not, I don't think I have any regrets. Of course, even if I miss you in the end, I will still be in the academic department." Keep going on the road..."

Pang Xuelin nodded and said: "Very well, let's go here first for today's interview, the results will be available in a week, just go back and wait for the notice."

Ai Ai blinked and said, "Professor Pang, may I ask, is my hope great?"

Pang Xuelin smiled and said: "You are the first one to come for the interview. Whether you can pass or not depends on the situation of the competitors behind you. Of course, your performance today is very good, so there is still a lot of hope for you to stay... ..."

Ai Ai laughed and said, "Professor Pang, I'm sorry to trouble you today. If there's nothing else, I'll leave first!"

With that said, Ai Ai got up directly and picked up the backpack she was carrying.

Pang Xuelin smiled and said, "Okay, see you later!"

"Professor Pang, I am also looking forward to seeing you again!"

Ai Ai smiled, turned and left Pang Xuelin's office.

Pang Xuelin smiled and shook his head.

He is actually quite satisfied with this girl. Although her personality is a little out of the ordinary, she has her own way of thinking about mathematics and is very spiritual.

In the following week, Pang Xuelin spent non-stop interviews.

The excellence of these shortlisted students was somewhat beyond Pang Xuelin's expectations. Almost every student has the potential to make a big difference in the fields of mathematics, materials science, and electrochemistry.

In the end, Pang Xuelin determined the final list of five people.

There are three graduate students majoring in mathematics, namely Sophie Heyman, David Halk and Ai Ai.

Sophie Heymann is a freckled German girl who is only eighteen years old this year, but has already completed her undergraduate studies at the University of Bonn.

She has a somewhat silent personality, but she is surprisingly gifted in the field of mathematics.

Originally, Schultz took a fancy to her and planned to make her a key training object, but she told Schultz that she wanted to learn Ponzi geometry.

After graduating from undergraduate, Schultz recommended her to Pang Xuelin.

When she came to the interview, she didn't talk like Ai Ai, but directly asked Pang Xuelin for a blackboard, spent half an hour, and used a very ingenious method to answer questions containing two arbitrary functions f and g. The perturbed generalized Kadtsev-Petviashvili equations are classified approximately symmetrically, and invariant solutions are constructed for several of them.

So Pang Xuelin directly decided to keep her.

As for David Halke, during the interview, this guy showed Pang Xuelin some of his notes when he was studying Far Abelian geometry, and some of his ideas and concepts coincided with Ponzi geometry.

You know, this guy is only 20 years old this year.

When Pang Xuelin was in the world of The Martian, he spent three years thinking on Mars alone before he figured out some of the joints, and he actually completed such work independently at this age.

In terms of talent in mathematics, Pang Xuelin, who had been transformed by genetic medicine, was far inferior to the other party.

Except for these two outstanding people, although the others are excellent, their overall performance is similar.

In the end Pang Xuelin chose Ai Ai who graduated from Jiang University.

After all, he recruited graduate students by himself, and he didn't accept a single Jiangnan student, which was somewhat unreasonable.

As for the two postgraduate places in the field of carbon nanomaterials and electrochemistry, Pang Xuelin gave Meng Yao and Sophon respectively.

That Meng Yao, who graduated from the Department of Mathematics of Peking University, Pang Xuelin only knew during the interview that he had minored in materials science at Peking University, and his interest in computational materials science was not much less than mathematics, so Pang Xuelin accepted him cleanly. .

Needless to say, the last sophon, she will be at the helm of lithium-air batteries in the future, and letting her come to study as a graduate student majoring in electrochemistry is paving the way for the future.