From Almighty Scholar to Chief Scientist

So after writing down a few calculations, he frowned and said softly, "This won't work."

When everyone was thinking about the problem, although his voice was relatively soft, it was still quite obvious. When the others heard it, they couldn't help but look at him.

"It won't work?"

Tang Qing asked a question.

When Lin Xiao said this, he obviously denied his proposal.

However, he wasn't angry either. This is the case with research projects. No one makes mistakes, which is obviously abnormal. Only by making mistakes constantly can they continue to succeed.

Of course, to make an error, you also need to explain the reason.

Therefore, he also waited for Lin Xiao to give the reason why this direction did not work.

Tang Qing also said, "Tell me what you think."

"Because r is not in the class Ap of the zero-order Riesz operator with p equal to 2 in two-dimensional space."

Lin Xiao directly stated the reason.

Hearing Lin Xiao's words, Tang Qing and Cao Chengqing were stunned.

"p is equal to 2?"

Tang Qing murmured, then wrote something on the draft paper, and immediately focused his eyes: "Yes...it is indeed the case. In this way, we cannot directly estimate the r-weighted zero shape."

Cao Chengqing also nodded.

After Lin Xiao reminded them, they immediately realized the problem.

Although it doesn't mean they can't find out, but the problem is, if Lin Xiao didn't bring it up, God knows how much time they would spend on it.

However, it took less than 5 minutes for Lin Xiao to point out that this road would not work, which made them feel admirable.

"sharp."

Tang Qingchao gave Lin Xiao a thumbs up.

Before Wang Wei introduced Lin Xiao, the reason why he agreed was because he liked Lin Xiao's potential and cultivated a relationship with Lin Xiao. He also didn't think about how much help Lin Xiao could provide.

After all, in the eyes of everyone, Lin Xiao is destined to develop in number theory. After all, he has shown such a powerful talent in number theory, and number theory is enough for a mathematician to study for a lifetime. Most famous Most mathematicians have specialized in one direction all their lives.

And a hammer to the east and a stick to the west is obviously a waste of talent. Even Tang Qing is planning to spend a while, waiting for Lin Xiao to waste time in their research group, and then warn him to concentrate on one task. research in the field.

But right now, it seems that he is still underestimated.

His mathematical talent seems to be very helpful to their research on this subject of mathematical physics.

Professor Cao Chengqing also praised: "That's right, I really deserve to be a mathematical genius."

As for the other graduate students and postdoctoral fellows, they can only express their admiration at this time. No matter what, they are geniuses. Even if they do not specialize in partial differential equations, even if they understand it, it is not something they can question.

However, in the face of the appreciation of the two seniors, Lin Xiao just said modestly: "Actually, that's it, mainly because it is about mathematics, and I can understand it. If it involves physics, I really don't understand it." There is a way."

"Hehe, don't belittle yourself."

Tang Qing waved his hand and said, "Then it seems that our previous direction was wrong, and we need to think about a new direction."

"Ah."

Cao Chengqing nodded, thinking again.

Although the previous direction was wrong, it is enough to change the direction and think again. The problem is not big, anyway, as long as it can be corrected in time.

After all, when researching a topic, the most fearful thing is not encountering problems, but fearing that there will be no problems.

In order to achieve the final goal, the intermediate steps need to be divided into small problems one by one, and then until the last step, but if you don't even know what the problem is, then it's over.

That's like not even knowing in which direction to exert force.

However, just after they lowered their heads for a while, Lin Xiao spoke again.

"Let's change to another one to estimate."

"Ok?"

The two professors who just lowered their heads immediately raised their heads again. Did this Lin Xiao come up with another method?

Lin Xiao stepped forward and said, "Can I use a pen?"

"Give you."

Tang Qing handed the blackboard pen to Lin Xiao, wanting to see what kind of surprise Lin Xiao could bring him again.

After taking the pen, Lin Xiao directly wrote down a formula on the blackboard.

【(αt^2－▽)Y】

"We don't need to estimate the previous thing, we just estimate it."

Looking at what Lin Xiao wrote, Tang Qing frowned: "Continue to talk."

"We define this weighted L2 generalized energy as..." Lin Xiao began to write the following formula on the blackboard.

【Xκ=∑|α|≤κ－2（∫……】

As Lin Xiao wrote down the line-by-line formulas, the eyes of the two professors became extremely serious, quietly watching Lin Xiao's calculations, and at the same time, they were also doing the calculations with their hands.

Tang Qing's graduate students could understand it at first, but they became more and more confused as they went on.

What are they talking about...

Is their graduate student in mathematics at Peking University studying for nothing?

I wanted to ask something, but seeing the two professors listening carefully, and seeing the postdoctoral seniors next to me also thinking hard, they could only give up and ask later.

In front of the blackboard, after Lin Xiao wrote down the last few lines of the formula, Tang Qing finally couldn't help but said, "Wonderful!"

Cao Chengqing couldn't help applauding.

The mathematical method used by Lin Xiao directly and perfectly answered their questions.

Now, with Lin Xiao's key step, they have successfully estimated the L2 generalized energy norm.

Chapter 119 The gap between mathematics and physics is not that big

Next, their subject can be studied as follows. This step of Lin Xiao directly solved the primary problem they are currently facing.

"We've finally reached a stage where we can now formally consider the situation in two-dimensional nonlinear elastodynamic systems."

Cao Chengqing said quite excitedly.

"Yes."

Tang Qing also nodded.

The two professors felt relieved for a while.

Every step of the research on this kind of topic is quite difficult, and any breakthrough can make them excited. After all, it also means that they are getting closer to their goal.

"Then, in the next week, let's start to study the following directions." Tang Qing nodded, "For the next work, the main task is to establish an incompressible elastic dynamic system in the Lagrangian coordinate system, and Given its basic properties, Xiao Huang and Xiao Tang, you two will be responsible for leading your juniors to continue searching literature, and if you have any questions, just come to me."

Xiao Huang Xiaotang is two postdoctoral fellows, and when they heard what their supervisor said, they agreed.

Then Tang Qing looked at Lin Xiao again, and then said with a smile, "Since Lin Xiao joined our research group today, let's go have a meal together, just to use our funds."

Lin Xiao nodded: "Then respect is worse than obedience."

Tang Qing patted him on the shoulder with a smile, and said: "Speak very politely, let's study mathematics, there is no need to do this, oh, by the way, you are in our research group, and you can't be wronged, every month I will give you a salary of [-] yuan until the day they solve the problem. In addition, you don’t have to save money when you go to eat, just take the receipt after eating, and I will reimburse you.”

Hearing Tang Qing's words, Lin Xiao couldn't help but be surprised, just drive [-] for a month?

"This...isn't necessary?"

"Hey, how polite are you? I'll take it for you. I'm still worried about how to spend our project funds. You can just send me your bank card number later." Tang Qing decided the matter without any explanation, and then he said: " Alright, let's go now and find a roast duck restaurant nearby, have you ever eaten roast duck in Shangjing?"

"Eat it before."

"Hehe, then go and experience the roast duck near our Beijing University. The taste is guaranteed to be no worse than that of other places."

With that said, Tang Qing pulled Lin Xiao along and took the others to dinner.

In the original plan, Tang Qing didn't plan to invite Lin Xiao to dinner. Even if it was a salary, he planned to pay [-] from the beginning, which was the same level as his graduate students, and [-] for postdoctoral fellows.

Still for that reason, at first he didn't expect that Lin Xiao could provide any help to the project, but now, in terms of mathematical methods, Lin Xiao really brought him a huge surprise, and he showed it casually today, just Solve the problems they are currently facing.

Although the problems Lin Xiao solves are in the category of mathematics and have little to do with physics, what they study in mathematical physics is not to use mathematics to solve them.

From this point of view, as long as they transform the physics problem into a mathematical form, and then give it to Lin Xiaolai to help solve it, how much time will it save them?

Tang Qing suddenly felt that he had dug up a huge treasure.

Then spending 3 yuan a month is not a big deal.

……

Soon, they came to the roast duck restaurant and found a private room. There were nine people in total, so several plates of roast duck were directly served, as well as some other dishes.

As for the wine, I didn’t order anything. After all, Lin Xiao doesn’t drink alcohol, so some drinks are enough. Although Huaguo’s academic circle is not as pure as other circles, and the wine culture is also prevalent, but their small gatherings, If you don't drink, you don't need to drink.

Soon, after eating and drinking, it was time to go back.

"By the way, Lin Xiao, where do you live? Let's see you off."

After eating, Tang Qing's car drove over.

As an academician, he is equipped with a driver and secretary, so Lin Xiao came here in his car just now.

Lin Xiao was not pretentious either, and said, "Then I will trouble you, I live in Yanbei Garden."

"Hehe, don't bother, Yanbei Garden, I used to live there when I was not an academician, but after I was elected as an academician, I changed my place to live, but I miss it a bit, it was a long time ago .”

While talking, the two got into the car again. Tang Qing said, "By the way, are you planning to develop into physics in the future?"

Lin Xiao said: "Mathematics is the main thing, and physics can also be studied."

"Well, if I still have some math and physics topics, I'll come to you for help."

Tang Qing said half-jokingly.

Of course Lin Xiao did not refuse: "It must be no problem, it just so happens that I also learn from you."

"Haha, that's the deal."

Tang Qing clapped his hands and smiled heartily.

"Of course, to be honest, your mathematical talent is really very good. If you can really develop into mathematical physics, you might really be able to come up with some good things. I thought you were studying number theory at the beginning. Our subjects are somewhat different, but today, you brought me a huge surprise."

Lin Xiao smiled and said: "Actually, I feel that the gap between mathematics and physics is not too big. As long as it can be expressed in a mathematical way, the feeling is not much different, right?"

Tang Qing: "..."

Not big?

It seems that it is really not big...

But not too much difference.

Lin Xiao went on to say: "However, looking at it now, probably only some problems in physics can be expressed mathematically."

Tang Qing was too lazy to worry about the big difference between mathematics and physics, and said: "Hehe, that's not necessarily true. Now there are computational chemistry, computational biology, and computational materials science. Aren't they all related to mathematics? Of course Well, what I said is not to let you go to study these things, as well as the mathematical physics I mentioned just now. If other people in our college know that you put pure mathematics aside and come to study applied mathematics, I’m afraid You have to trouble me."

"That's not enough, is it?"

Lin Xiao opened his mouth wide in surprise.

"That's very important."

Tang Qing shook his head, "Those who study mathematics look down on others, and those who study pure mathematics look down on those who study numbers. Who makes pure mathematics harder than other subjects?"

"So they will definitely think that you should study mathematics with peace of mind, such as your number theory, or algebraic geometry. Recently, I have heard of the famous Lin's conjecture in the mathematics world."

Hearing Tang Qing's words, Lin Xiao couldn't help but feel amused. The subject contempt chain is really a kind of dumbfounding thing.

Of course, as far as he is concerned, it is more important to apply what he has learned. To study those more difficult pure mathematical problems is to challenge the limit of wisdom, and to apply mathematics to the research of other disciplines is also to show his own research. Things have a certain practical meaning.

Just like that, the two chatted, and the car drove to the gate of Yanbei Garden.

"Academician Tang, then I'll go back."

"Well, goodbye."

Tang Qing waved his hand and said with a smile: "Then I wish you the best in academics."

"Thank you."