Lu Chengchuan was not very surprised when he heard Shang Xiping ask him to read the paper on the other end of the phone.

Although everyone has different majors, the development of modern mathematics is more and more oriented towards application rather than theory. The frontier of mathematical applications lies in the field of computing. So they occasionally exchange interesting papers in their respective fields.

He ordered himself a cup of milk tea, and then the old god opened the email sent by Shang Xiping on the spot.

The moment he saw the title, Lu Chengchuan couldn't help but raise his eyebrows, how could Shang Xiping pay attention to this direction?

In previous years, the singularity of clusters was still a popular direction. But after all these years, there has been no breakthrough in the positive domain, and the heat has slowly decreased.

But just because the heat has gone down doesn't mean the issue isn't important anymore. On the contrary, they have even turned the problem into a language in which they directly quote and assume that it has been justified when studying algebra-related problems.

Once someone proves it, many predictions and conjectures in the field of algebra will directly turn into definite ideas!

"It's kind of interesting." Lu Chengchuan laughed twice, opened the academic search engine casually, and searched for the topic of the paper.

The heat in this field has indeed decreased, and there have been almost no new papers published in heavyweight journals in the past decade or so.

However, on the preprint platform, someone uploaded a paper related to the full Buigovin this morning.

The preprint platform is a kind of paper sharing platform that was born out of the high threshold and long time of journal review. Although the disadvantage is that anyone can send it, the quality of the papers is uneven, and because there is no peer review, the possibility of paper fraud has skyrocketed.

But the advantages are also obvious.

In the Internet era, uploading electronic documents can not only effectively leave traces, but also confirm the time of first issuance. Researchers are delighted by its rapid peer response. Almost all academic researchers are happy to share their articles on it.

In the case of such significant advantages, the relevant paper of the whole Buigoven has not caused much discussion so far. I think the content level should be relatively average.

Lu Chengchuan closed the browser and opened the paper document: "The topic is so big, let me see how many pounds and taels you have......

He glanced at the previous abstract and went straight to the argumentation process of the main text.

Singularity cancellation of positive eigenfields is not a formula, but a problem. So no matter how fancy the preface is, it's not worth wasting time, only the proof process is the most worth the trouble.

The first part of the argument alone is six pages long.

Lu Chengchuan crossed Erlang's legs, and calculated silently while watching.

Looking at it, he casually pulled the notebook on the side, took out a pen and began to check. After burying his head in the calculation for more than ten minutes, he frowned: "The ideal index has been introduced, and this idea is somewhat interesting." ”

He put the pen down and looked back at the introduction to this section in the preface. He was so engrossed that the delivery man brought the milk tea, but he didn't pick it up, but waved his hand and said, "Put it on the table." ”

The delivery man in the yellow rabbit hat didn't dare to disturb him when he looked at the screen and spread out his notes. After putting down the milk tea, he also helped him close the door.

Lu Chengchuan didn't notice the actions of the delivery man, and after reading the graded algebra quoted in the preface, he checked it again.

After nearly half an hour, he put down his pen again and looked up: "Introduce the infinite near singularity, and include the lowest singularity through local smoothing and scaling of a finite sequence......"

In the office of the computer department, Shang Xiping has given up thinking on his own.

He is an applied computer, so why should he get along with classical algebra! This kind of problem is left to Lu Chengchuan who is engaged in pure numbers, and he just needs to wait for the result.

"Your professor Lu is in the mathematics department, far away from us. We'll just wait. Shang Xiping glanced at the clock on the wall, "If there is no news for a while, don't worry." After all, school has started, and they have a lot of things to do in their math department. ”

Jing Changjia sat there, and the whole person looked gentle and calm: "I'm not in a hurry." There should be results in half a month. ”

"Half a month should be ......"

"Old merchant!" Before anyone arrived, the voice came first, "Where did you get that paper!" ”

Lu Chengchuan roared and rushed into Shang Xiping's office, not seeing Jing Changjia sitting on the side at all.

"I searched for it, and it was an original paper! Where did you get this paper? Is it from our hospital? ”

Shang Xiping smiled and said, "Hey, you, why can't it be written by me?" ”

"Shit! You are very good at doing applications, and you are going to do pure numbers. Lu Chengchuan shook his hand, "It's a new teacher from our school?" Or whose PhD? ”

Shang Xiping raised his chin: "You came quickly, the person hasn't left yet." Right there. ”

Lu Chengchuan turned around happily, but what caught his eye was a face that could be called immature to him.

"Hello Professor Lu, I'm Jing Changjia." Jing Changjia smiled and stretched out his hand.

"The back waves of the Yangtze River push the front waves." Lu Chengchuan held his hand and said with emotion, "Mathematics is really the field of genius as always. I'll tell you the truth, I haven't read the calculation steps at the end of your paper. But your thinking is particularly ingenious, and I want to talk to you about it. ”

"Old Road ......"

Lu Chengchuan turned a deaf ear, and only took out the printed paper from the file bag: "Here, start from the lowest singular point......"

Jing Changjia tilted his head and looked at it, and picked up the pen in the folder: "That's right, the ideal index E=(J,b)." With the introduction of finitely generated hierarchical algebra, it is possible to obtain a union of the central images of all permissible explosion sequences. ”

Lu Chengchuan looked at the formula that Jing Changjia wrote down on the side of the paper without hesitation, and the more he looked at it, the more happy he became.

"Old man Lu?"

Professor Lu waved his hand impatiently, and immediately said to Jing Changjia: "No wonder you come to E=Ei, it is allowed in this step, and it is very clear. ”

After he finished speaking, he raised his head and looked at Jing Changjia carefully: "Good boy, are you from our hospital?" ”

"I'm from the computer science department." Jing Changjia said.

Lu Chengchuan was stunned when he heard this: "Computer department? How can you be a computer science department? ”

The gray-haired old man looked at Jing Changjia in shock, and glanced at Shang Xiping again.

"Let me tell you, boy, don't look outside day by day that computers are the direction of the future, in fact, the blue ocean of development in this industry has long passed. Even if you want to graduate and make money, if you go to a big factory, you will burn the lamp and boil the oil, so it is better to come to the academy to engage in academics. ”

"Lu Chengchuan!" Shang Xiping squeezed in strongly, "You came here to rob my students, right?" ”

Lu Chengchuan pushed him away with "oops, oops": "As a teacher, you should try your best to discover the talents of your students." You don't have to be trick-or-treating here. ”

After he set aside Shang Xiping, he looked at Jing Changjia and said seriously: "Let me tell you, little classmate, you should come to the Department of Mathematics, let's start with basic mathematics and go all the way to application." Think about it, if you were in a computer science department, what kind of neurobiology, what kind of intelligent algorithms, that's what you should do. But if you're in the Academy, it's different. ”

He patted Jing Changjia hard: "They engage in chaotic algorithms and turbulent intelligent control, but they haven't cooperated with the Institute of Mathematics in any year?" When the time comes, you will be an external expert, and you will earn more than them. The teacher also has several project teams in his hands, so you can join at any time if you want. ”

After he finished talking to himself, he still felt unsafe, grabbed Jing Changjia's hand again, and clapped the board: "In this way, you will write an application for transfer when you go back, and I will approve it immediately with your teacher." Which teacher do you want to continue your research with? If there is no quota, I will give special approval. ”

"I didn't think about it." Jing Changjia said.

"Haven't you thought about it? yes...... Do you have this level and want to do independent research? Lu Chengchuan asked, "Or you can graduate after the article is published, and then you will read a doctorate under the name of Academician Chen of our academy, so that you can have an academician newsletter when you publish an article, and those journals will be reviewed faster." ”

Lu Chengchuan has been teaching and researching for half his life, but he knows too well the twists and turns in the review of those journals.

As soon as he mentioned this, he asked, "Did you submit the paper?" Which one? ”

Jing Changjia nodded and said, "I voted for the mathematics annual report." ”

"Mathematics Yearbook...... Not bad, good choice. This kind of results should be published in the annual report of mathematics. It's just that the review is too slow. You vote for them, but some of them wait. ”

The Mathematics Yearbook, the core journal at the top of the pyramid, is a newcomer, and that group of journal editors can spend several years reviewing this article.

Lu Chengchuan thought in his heart, nodded and shook his head for a long time, and then said, "Let's arrange the transfer first." How many years are you studying now? ”

"Maybe it's a little early to get a PhD." Jing Changjia smiled and said, "Professor Lu, I'm only a sophomore." ”

"Oh, they're sophomores."

Lu Chengchuan blurted out, and then was stunned: "Sophomore? Only a sophomore?! Shang Xiping, you rob me of a student of the Academy! ”

……

After finalizing the transfer, the two watched Jing Changjia leave the office building. Shang Xiping said happily: "How is it, this student is good, right?" ”

"It's a good seedling." Lu Chengchuan looked at the back of the road that had gone away, and sighed infinitely in his heart, "Mathematics, it's really ruthless." ”

"It's no more ruthless than you, Professor Lu." Shang Xiping snorted, "I don't ask the opinions of other students, just take people from our promising computers to your academy." ”

Lu Chengchuan shook his head happily: "If he doesn't want to, can I force him to fail?" Basic mathematics is not enough to have talent and inspiration, but also to have enough love. Such a cutting-edge direction, he can only see it if he loves it enough. ”

After he finished speaking, he put his hand behind his back and raised his chin: "I took the child after careful consideration!" ”

After that, like a winning rooster, he walked away majestically.

Halfway through, he suddenly remembered something, and the old man was full of pride: "Oops, my milk tea!" ”

He hurriedly touched his phone to confirm the location of the milk tea, but as soon as he took out his phone, it rang loudly.

Lu Chengchuan looked at the name displayed on the screen, and nodded the call with a smile: "Wilson, it should be late at night over there, why are you calling me at this time?" Did someone ask you for peer review? ”

"No, no. Road, I'm on my way to the airport. You'll land in Yujing at about four o'clock in the morning. Professor Wilson was particularly anxious, "I want to see you tomorrow with a scholar named Wujiu, is that okay?" ”

Lu Chengchuan was stunned when he heard it: "Who?" ”

Wujiu？ 59？

"It's an algebra scholar in your mathematics department." Professor Wilson hurried, "I have some questions for him. ”

Lu Chengchuan thought hard, and couldn't think of anyone else in the mathematics department of Yujing University who could ask Wilson for advice on algebra.

In algebra, Wilson was already one of the most powerful mathematicians alive. In recent years, he has specialized in the Hodge conjecture and has made a lot of achievements.

Although the mathematics department of Yujing University is one of the best, Lu Chengchuan has to admit that there is no teacher in the school who is worthy of Wilson's special trip to consult.

"Did you misremember the name, we don't have a teacher named 59 in our school." Lu Chengchuan said with a sigh.

"Impossible!" Wilson said categorically, "My Longxia language is not so bad, his signature is wujiu!" Wait, I'll see his acknowledgments. ”

"Okay, you take your time. I'll arrange for someone to pick you up. Lu Chengchuan said, "You'd better remember his school correctly." If this 59 is next door, then you can sleep in the airport. ”