From small town academic to chief scientist

After breakfast, Zhou Yi went to the library to write a paper.

During the summer vacation, the library remains open.

Just when Zhou Yi was in the climax of writing his thesis and couldn't stop, a phone call woke him up from his state of concentration.

The vibration mode set on Zhou Yi's mobile phone will not disturb other students in the library.

Zhou Yi took a look and realized that this was not his future teacher.

When he came to the bathroom, Zhou Yi answered the phone.

"Hello, Zhou Yi?"

A voice came from the other end of the phone.

Zhou Yi said quickly:

"Teacher, it's me. I'm Zhou Yi."

"On July 31st, the International Congress of Chinese Mathematicians, remember to come to Jinling to attend. There will be dedicated personnel to pick you up. In addition, you will have a change of clothes. There will be reporters watching the news for interviews, and there will also be interviews at 7 p.m. Broadcast."

Qiu Chengtong went straight to the topic.

Zhou Yi did not expect to attend another academic conference, but thinking that it was his master who organized it, he also said:

"Okay, I'll be there on time."

"Well, I'll be busy first."

Qiu Chengtong's tone was a little hasty, and there was someone looking for him on the other end of the phone, who was obviously very busy.

After hanging up the phone, Zhou Yi read for a while.

When the time was almost up, I arrived at the scheduled defense office.

Miao Lai and Academician Yang have already arrived.

In addition to the two, there are also Vice President Tang Ping and one of the few academicians of the Academy of Engineering at Chongqing University.

Seeing Zhou Yi sweating, Academician Yang said:

"Let's blow on the air conditioner first. I've read your undergraduate thesis. It's comparable to a doctoral thesis.

I haven't discovered the application value yet, but I can't say for sure in the future. After all, some things may be destined to be used from the moment they are manufactured, while some achievements may have to wait hundreds of years before they are used. application.

I won't let you get through my problems easily later, so you have to be prepared. "

Zhou Yi took the paper handed over by the dean's graduate student, wiped his sweat, and first said to Xiao Wang:

"Thanks."

Then he said respectfully to Academician Yang:

"my pleasure."

After a while, the defense began,

Zhou Yi opened his PPT, followed the process, and began to introduce himself.

"I am Zhou Yi from the School of Mathematics of Chongqing University in 2020. The title of my thesis is "Research on the Exact Solution of Quadratic Programming with Quadratic Constraints","

Start by briefly introducing the paper, reporting the main ideas and final conclusions of the paper.

The people responsible for shooting below also started to focus their cameras on Zhou Yi.

This self-description process only takes a few minutes, and the next question-and-answer session is the focus of graduation.

Academician Yang did not leave any ink, but asked straight to the point:

"On the fourth page, the second-order cone relaxation method mentioned is for the non-convex QCQP problem. Saxena et al. gave a second-order cone relaxation. What is the difference between their views and yours?"

Zhou Yi knew that he would not simply ask some ordinary questions. Fortunately, he was fully prepared for this question.

Zhouyi said:

"Of course there is. I switch the screen to writing mode and write out two different constraints."

“Their constraints are (1/2)x^TQ_ix+(q_i)^Tx+C_i≤0;

And mine is 1/2x^T(∑_{λ_ij}λ_ijV_ij(V_ij)^T)x+(q_i)^Tx+C_i≤-1/2∑_{λ_ij}λ_ij[(b_ij+a_ij)(V_ij )^Tx-a_ijb_ij]. "

Zhou Yi wrote it directly.

Academician Yang nodded. Even some PhD students may not be able to write about this problem immediately, or even be unable to write it out.

This question is very detailed and very expert.

The academician of Chongqing University on the side also said:

"Although I am not a mathematics major, I know a lot about mathematics. I have also talked a lot with Lao Yang. Your method for solving the optimal solution of the extended trust region subproblem (eTRS) is different from the general non-convex QCQP. The solution methods are different, can you talk about the implementation in the paper in detail?"

Zhou Yi breathed a sigh of relief. The academician's questions were less technical and more focused on theoretical applications.

Zhouyi said:

"The eTRS problem here is implicitly convex, that is, the problem is equal to the optimal objective value of one of its convex relaxations, but the convex relaxation may not necessarily directly return the optimal solution of eTRS. Under this premise, we provide A method to return the optimal solution of eTRS..."

The defense went smoothly. With the current difficulty of the questions, Dr. Wang on the side could not understand. The main reason was that the direction was different. This paper was about operations research, which was not the direction of his research on PDE.

Finally, Academician Yang nodded and said:

"Actually, Miao Yuan invited me to be your defense teacher. I was a little surprised. With your current level, few people can achieve it in geometry.

Therefore, I give this paper an excellent rating.

Let me give you another suggestion here, I hope you will take it for your reference. "

Academician Yang finally spoke a little solemnly, and Zhou Yi also nodded very solemnly and said:

"good."

Academician Yang said solemnly:

"As I said just now, few people can reach your current geometric level. Those who can surpass you are those old guys who have been studying for decades. They have also won various awards.

What you need is to inherit Mr. Qiu’s school of thought and develop your Zhou geometry on this basis.

If you have the opportunity, discuss with Mr. Qiu to study for a Ph.D. in Professor Milnor, or in Europe, inherit multiple schools of geometry, and then become a common voice and create a new era of geometry. "

Academician Yang's words are obviously Sima Zhao's intention, which is known to everyone, and he wants Zhouyi to become the greatest originator of the Geometry School!

Miao Lai and Principal Zhang were stunned. If it was really as Academician Yang said,

In the future history of mathematics, I am afraid that a lot of space will be devoted to the Book of Changes.

In addition to establishing a sect, so far, except for Mr. Qiu, basically no one in the country has been able to do this.

Even Beijing University cannot compare with it.

Mr. Qiu's great status in international mathematics is partly related to his own school.

If Zhou Yi can achieve this achievement, Chongqing University will definitely become a new mathematics center in the future, like Beijing University, Shuimu University, Aurora University, Chinese Academy of Sciences and Hua Science and Technology University, and the largest mathematics center in the southwest region.

Keep up with them!

Even if the time comes, it is not impossible to become the largest mathematics center in Daxia.

At that time, there were many things that could be brought to the table.

The premise is that Zhou Yi is willing to return to Chongqing University.

Before Zhou Yi spoke, Miao Yuan on the side said directly:

"Thank you Mr. Yang for your guidance. Our goal is still too low. Zhou Yi, please give Mr. Yang a good thank you."

Zhou Yi has never thought about such a thing, but it can be regarded as pointing out a way for Zhou Yi. Zhou Yi said respectfully:

"Thank you, Academician Yang. I will work hard."

At this time, Zhou Yi seemed to have thought of something and said:

"By the way, Teacher Qiu invited me to attend the ICCM International Conference of Chinese Mathematicians, and I will give a report then."

Academician Yang said directly:

"Go, let more mathematicians at home and abroad know you and show your talents."

Zhouyi said:

"good."

After the defense, Zhou Yi took his graduation certificate and degree certificate, put on his bachelor's uniform, and took photos with all the defense teachers and the president and deputy deans of the School of Mathematics.

At this point, Zhouyi basically has nothing to do with Yuda anymore.

Professor Tang Ping on the side seemed to have thought of something and said:

"We will reserve your dormitory for you until you graduate this year. During this period, you can return to school at any time and live in your dormitory. This is specially approved by Principal Zhang."

Zhou Yi was preparing to move out in the next few days, but he didn't expect that he would be able to return to Chongqing University.

Principal Zhang on the side said:

"Well, we specifically approved it. I hope you will return to your alma mater more often in the future, and I also hope you will return to your alma mater to teach in the future."

After speaking, there was a hint of melancholy and a hint of hope.

Then they left one by one.

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