Zhao Xiancai was naturally not clear about the reaction of Yu Shujun's roommates. At this time, Professor Yan Xingying was still in the office looking at the paper that Zhao Xiancai had uploaded to arxiv.

She was so fascinated by it that she didn't even want to run out to eat dinner. In the end, she bothered one of her doctoral students to bring it to her.

There is no way around it. The relationship between the doctor and the supervisor is said to be a teacher-student relationship, but in fact it is a relationship between the boss and the employee, and whether the boss pays wages or not depends on the boss's conscience.

Some tutors let students do the research process and let the students complete the paper themselves, but when they finally submit the paper, they write their own names on the paper.

Some tutors, on the other hand, let their students put in too much effort and give the students their own papers so that they can graduate.

This is the gap between people, but these two types of tutors are good tutors for students who really want to learn.

But with so many graduate students in China, how many of them really want to learn? Most of them are just dawdling. If they really meet the second kind of tutor, they will probably wake up laughing in their dreams.

For the next two days, Saturday and Sunday, Zhao Xiancai didn't do much reading or studying. He was taking Yu Shujun around the Peking University campus.

As for Yan Xingying, it was not until the evening of Sunday that she finished reading the paper on the Erdős arithmetic sequence conjecture that Zhao Xiancai uploaded to arxiv.

"This student is really amazing. I used to think that some teachers were too optimistic about his future.

It now appears that our estimates of his future are not only not optimistic, but even the most optimistic views are too conservative.

Even if this paper is recognized by the international mathematics community as having no problems, I am afraid that it will have exceeded the most optimistic predictions of us teachers before, and there is no need to wait for the future.

Judging from his last paper and this study on Erdős's arithmetic sequence conjecture, this student does not look like a novice at all in terms of his speed in researching mathematical problems or his ability to write papers.

It would be a waste of talent for such students to remain in the undergraduate program with more than two years left. You need to contact the dean and talk to the dean about this."

Thinking of this, Yan Xingying immediately forwarded Zhao Xiancai's paper to Dean Yang Gang.

Although Yang Gang does not study combinatorial mathematics, his research field also involves number theory. What's more, Zhao Xiancai posted a proof on arxiv that she couldn't see any problems in the first time.

A conjecture paper, this kind of thing naturally needs to be known to the dean of the School of Mathematics.

"This is a paper on the proof of Erdős's arithmetic sequence conjecture that Zhao Xiancai of our Institute of Mathematics uploaded to arxiv on Friday afternoon. I have read it once and don't see any problems for the time being.

Dean, please see if he has really solved the Erdős arithmetic sequence conjecture."

Because Zhao Xiancai's name was already well-known in the eyes of teachers from the School of Science and Technology, Yan Xingying did not introduce Zhao Xiancai too much when he sent this message to the dean.

At this moment, it is only around eight o'clock in the morning in the United States, far across the ocean.

Last night, Katz stayed up late to read the paper that Zhao Xiancai submitted to the Annals of Mathematics to prove Erdös's arithmetic sequence conjecture. After reading it, he printed out the paper early this morning.

Looking for Viscount Pierre René Deligne.

Pierre Deligne is a Belgian mathematician born in Brussels. He won the Fields Medal in 1978, the Crafford Medal in 1988, the Wolf Medal in 2008, and the Argentine Medal the year before.

The Bell Prize winner is one of the world's top figures in the field of mathematics, the founder of modern algebraic geometry, and a student of Alexander Grothendieck, the greatest mathematician of the 20th century.

However, a year ago, Grothendieck, a legend in mathematics, died of illness in France.

The current Zhao Xiancai is no longer the same Zhao Xiancai when he was still in high school. He also knows about Deligne and Grothendieck and has learned about their deeds.

Especially Grothendieck. After learning about his deeds, Zhao Xiancai still doubted whether he had a plug-in system like himself. Even if it was not a learning system, it was definitely a similar system.

"Viscount Deligne, this is a submission that Mathematics Annual received two days ago. After reading it through, I didn't find any obvious loopholes or irrationality."

After finding Deligne, Katz said to him, in fact, after reading it once, he already felt that this paper could be published in their journal, but normal paper submissions still require peer review, and this paper was submitted to the Annals of Mathematics

It’s certainly not possible for him to publish it just because he thinks it’s okay.

Their Mathematics Annual has been developing for so many years and has finally achieved its current status. The quality of papers published in the Mathematics Annual must also be controlled, so he came to Deligne.

And before he came, he also sent this article to several other well-known professors in the field.

"Huh? Is this a proof of Erdős's arithmetic sequence conjecture?"

Deligne, who didn't pay much attention at first, said with interest after seeing the title of the paper in Katz's hand, and reached out to take the paper.

"Yes, this paper not only has no loopholes, but also has certain paper writing skills. The scholar who wrote this paper should have some ideas for researching this field." Katz said.

"by xiancai zhao? Chinese...are there any Chinese scholars who are famous for their research on Erdős's arithmetic sequence conjecture?"

Deligne opened the paper, and after seeing Zhao Xiancai's name, he also asked Katz on the side with some curiosity.

He felt that Zhao Xiancai's name had no influence on him at all. He even wondered if he was really old and his memory was failing.

"I have never heard of this name, but according to his manuscript information, he is a scholar from a Chinese university."

After hearing what Katz said, Deligne became more and more interested in this paper, and said to him: "Okay, let me take a look first."

After saying that, Deligne started to read Zhao Xiancai's paper from the abstract.

Katz originally thought that Deligne would read a few pages. If it worked, he would let him go and continue reading. If not, he would say no. But he didn't expect that Deligne would be completely immersed in it as soon as he read it.

Ten minutes passed quickly. Katz, who was beside him, was a little bored and started looking around.

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