Xueba: The knowledge I teach, critical hits are returned

The Hongqi L5 sedan soon stopped at a five-star hotel near Yenching University.

This is also the hotel where the scholars of the Daxia Mathematics Conference stayed.

This time, the Daxia Mathematics Conference was held in the first academic lecture hall of Yenching University. As for why it did not choose Shuimu University, which ranks first in comprehensive strength in Daxia, Gu Bai did not know.

Maybe, Yanda's mathematics is better than Shuimu?

However, there are many debates about this topic, and there is no definite answer as to who is stronger and who is weaker.

Anyway, both universities are the top in Daxia.

At the hotel front desk, after getting the room card, Gu Bai and Professor Luo Shifei got on the elevator and pressed the 36th floor.

It is said that the 33rd to 36th floors of the hotel were all booked by the Daxia Mathematics Association, which shows that the Daxia Mathematics Association is still very rich. For a hotel of this level, a room costs at least 8,000 per night, not to mention tens of thousands.

This Daxia Mathematics Conference held a total of 5 days of academic reports, which means that the cost of accommodation alone for these 5 days may reach tens of millions.

Of course, this kind of academic exchange and discussion cannot be measured in money.

""Okay." Gu Bai nodded.

"Oh, and one more thing. At 7pm, there will be a small opening ceremony on the rooftop before the mathematics conference begins. It is called a gathering of mathematicians. If you are interested, you can make friends with some confidants and professors in the mathematics world."

At the end, Professor Luo Shifei added another sentence.

As for the gathering of mathematicians, Gu Bai was not interested in it. He didn't know the bigwigs in the academic world. Even if he knew others, they wouldn't know him.

"I'm not going. I finally got around to see my old friends."After that, Professor Luo Shifei left.

Gu Bai smiled helplessly and didn't care.

After swiping the card to enter the room, he opened the curtains. It must be said that five-star hotels are expensive for a reason. Through the transparent floor-to-ceiling glass windows that occupy the entire wall, you can overlook the entire Old Summer Palace and Yenching University. This kind of scenery is definitely more beautiful even at night.

Lying on the bed, Gu Bai fell asleep quickly.

Gu Bai was awakened by a knock on the door. It was the hotel waiter who knocked on the door, reminding Gu Bai that it was dinner time.

Originally, Gu Bai thought that there would be dinner on the cart, but after the waiter reminded him, all mathematicians' dinner tonight was on the roof.

The platform on the roof of the hotel, which was several hundred square meters, was now built into a small dinner party.

To be precise, it was a dinner party for mathematicians.

In the center of the platform, two rows of tables covered with white cloth were built, and they were piled with food.

Coming and going, there were many professors in Zhongshan suits, some of whom had white hair on their temples, but each of them was full of energy, and their behavior revealed a hint of Scholarly atmosphere.

Most of them were holding champagne in their hands, and when they saw acquaintances or old friends, they greeted each other.

Unfortunately, Gu Bai had seen Brother Qiang in books and on the Internet, but he did not know Gu Bai.

Walking on the red carpet, Gu Bai came to the tables on both sides of the platform, eating bread and drinking champagne. From time to time, he heard the insights of the mathematics masters on a certain mathematical theory, which was also quite interesting.

After eating, Gu Bai patted his belly and was about to go downstairs for a stroll, but his eyes suddenly caught a familiar figure in the corner.

Professor Wei Shen, the cold-water steamed bread professor of Yanda!

Gu Bai had also seen this cold-water steamed bread professor of Yanda on the Internet. Putting aside the countless trophies he had won from elementary school to university, his talent in mathematics alone was also top-notch in Daxia.

Thinking that he was here and couldn't leave without saying a word, Gu Bai walked towards the corner with champagne.

Wei Dongyi, who was writing lines of mathematical formulas on his notebook with a black signature pen, did not notice that there was a person standing behind him.

"This is...ns equation..？"

Hearing the voice, Wei Dongyi turned his head and looked.

It was a young man, but he didn't know him. Wei Dongyi smiled politely and said,"Well, who are you?""

"Gu Bai from Linhai University." Gu Bai smiled and introduced himself.

Gu Bai? (To read exciting novels, go to Faloo Novel Network!)

Wei Dongyi exclaimed, looked at Gu Bai, and said,"So you are a big shot in the field of prime numbers."

"What big shot? He is just lucky."Gu Bai said modestly.

Mathematics has many branches, such as algebra, number theory, geometry, topology, analysis, function theory, combinatorial mathematics, etc.

The big shot in the field of prime numbers mentioned by Wei Dongyi is actually a small branch in the field of number theory.

However, Wei Dongyi misunderstood one thing. Gu Bai is not limited to the field of number theory and prime numbers. In mathematics, Gu Bai is omnipotent.

After chatting for a few sentences, Gu Bai found that this Wei Shen was not as bad at speaking as people said on the Internet.

At least when talking about mathematical knowledge, he was eloquent.....

"Are you also interested in the NS equations?"Finally, Wei Dongyi shifted the topic to the notebook in his hand.

The NS equations, or Navier-Stokes equations, are equations of motion that describe the conservation of momentum for viscous incompressible fluids.

Gu Bai smiled, but did not directly answer Wei Dongyi's question. He pointed to the mathematical formulas on Wei Dongyi's notebook and said with a smile:"I have a little understanding of it, but because the NS equations have an additional ?△ second-order derivative term compared to the Euler equations, it is more difficult to crack...."

As a result, it goes without saying that Gu Bai's current math level 4 ability is not enough to solve this problem.

"'It's more than just a problem. This?△ The second-order derivative term makes the NS equation extremely changeable. Except under certain conditions, it is difficult to find the exact solution of the equation."

"certainly...Under certain conditions, it cannot be solved by mathematical formulas...."

Wei Dongyi pointed to the calculation process in his notebook and frowned.

Obviously, this difficulty is also a point that Wei Dongyi cannot overcome.

Of course, this is also a problem that all mathematicians who study NS equations cannot overcome.

Glancing at Wei Dongyi's notebook, Gu Bai smiled and said,"What if I tell you that your idea is completely unworkable?"

"What's the meaning?"

"Literally."

Gu Bai paused and explained:"The NS equation is the motion equation that describes the conservation of momentum of a viscous incompressible fluid. Obviously, it cannot be solved from a purely mathematical perspective. So...You can try to combine it with some physics knowledge."

Hearing this, Wei Dongyi frowned and thought about it.

Gu Bai's words obviously gave him some ideas, but...Then he shook his head and said,"Physics is not my area of expertise."

"If you are not good at it, I can teach you." He thought to himself, but did not say it out loud.

Gu Bai stretched out his hand and said,"Let me use your pen."

"Here." Wei Dongyi handed the notebook to Gu Bai.

【In the rectangular coordinate system, the component form of the NS equation can be expressed as:??（?/???+?/x+v?/?y+w?

/?z）??fx-?p/?x+（?2/?x2+?2/?y2+?2/?z2）....fire】

【...Where ?? is the fluid density; V is the velocity vector, v, w are the velocity components of the fluid at point (x, yz) at time t, so that....】

Gu Bai wrote down his thoughts on the NS equation from a physical perspective in his notebook, while Wei Dongyi, who was standing by, looked at the characters that kept appearing on the notebook, and a serious look gradually appeared on his face.

Gu Bai's speed was very fast, and he also mixed in the knowledge of physics. Wei Dongyi did not dare to be careless, for fear of not being able to keep up with Gu Bai's pace.

But...As more and more formulas appeared on the notebook, Wei Dongyi frowned, and a sense of shock gradually flowed in his heart.

The young man in front of him was very strong. Of course, it was not that Gu Bai had directly cracked the NS equation, but Gu Bai's leaps in thinking and his skillful use of mathematical formulas made him amazed....

In the past few decades, I have never seen anyone who can use mathematical formulas more skillfully than him....is the first one.: ʕ˖͜͡˖ʔ ? ấ ? 亗