As the bell rang, the first class in Li Mu's life ended.

From the perspective of the effect of the teaching, the class can be called a success with an unsolved problem that gradually leads the students into an interest in number theory.

At least, throughout the class, all math majors were attracted by Li Mu's narration.

Even those students in other majors, as long as they have a certain foundation in mathematics, can listen to it, such as those majoring in physics.

Of course, the most fundamental reason is that the content of Li Mu's lecture in this class is not particularly difficult, it is only the basic part of undergraduate number theory, and these students present can be called top students, so they absorb knowledge very quickly.

As the class ended, nearly half of the students present did not leave, but continued to stay in the classroom, discussing and thinking about the problem just now.

Of course, the students have gained something, and Li Mu, as a teacher, has also gained something in this class.

Sitting down at the podium, he pulled out his scratch paper and began to make calculations based on the inspiration that came to him in class.

"Boltzmann Equation ......"

As a classical equation in statistical physics, the Boltzmann equation does not statistically analyze the position and momentum of each particle in a fluid, but only considers a group of particles that occupy any small area of space at the same time and are centered at the end of the position vector.

In other words, the scope of its consideration should be more general.

From a certain point of view, this is also the most in line with Li Mu's needs, because this point has a very high fit with his Li space.

However, it is not enough to have a fit, it also has to be able to help Li Mu solve the problem of the Neville-Stokes equation, a partial differential equation.

"If you start from the direction of number theory......"

Li Mu squinted his eyes slightly.

The computer in his mind began to work like crazy, helping him to derive and find all possible inspirations.

Soon, he had a direction, and in fact, in the course of the class just now, he had new ideas.

The corners of his mouth turned slightly, and the tip of the pen began to move.

"The biggest advantage of the Boltzmann equation is that it doesn't take into account a single particle, but the biggest disadvantage is also here, so that it doesn't take into account enough detail."

“而如果能够既发挥其整体考虑的优点，又能够在细节上弥补它存在的缺点，那么，这个方程，也就能够变得更加完善起来。”

"So, next, I just need to ......"

It took almost no time, just a few moments, and a piece of scratch paper was filled with formulas.

In this way, his calculations gradually entered the state.

And just as he was calculating, a few people from Wiles, who had just finished watching the whole class, walked up.

Their faces were full of amazement, because Li Mu's first class after becoming a teacher was incredible.

It's like the first lesson of a new teacher, it's like a familiar hand.

How can anyone start showing off their skills in the first class?

"Li Mu, you still said that you won't go to class!"

After stepping forward, Licht couldn't help but speak.

It's just that Li Mu didn't raise his head and continued to do the calculations in his hands.

李赫特以为李牧没有听见，正当他想再喊一声的时候，怀尔斯这时候忽然伸手制止了他，说道：“嘘，先别说话，李牧现在…… Other key questions seem to be pondered. ”

Several professors were stunned.

Li Mu, what are you studying?

They quietly stepped forward and stood behind Li Mu to take a look.

"Hmm...... This seems to be physics? Another professor asked.

"Mathematical physics, we all know, Li Mu is also a top theoretical physicist." Licht said with a smile.

However, compared to their discussion, Wiles's brow froze.

"Wait, what Li Mu is studying now seems to be...... Hydrodynamics? ”

"Fluid mechanics?"

Several people were stunned.

After all, after switching from mathematics to physics, there are quite a few people who have begun to study fluid mechanics, including Tao Zhexuan, who has also studied fluid mechanics.

In a way, the study of fluid mechanics is now a completely mathematical problem.

The ultimate goal of all mathematicians who study this is to challenge the Neville-Stokes equation, the ultimate problem of classical physics.

Therefore, almost immediately, they guessed that Li Mu was trying to solve this problem!

Licht was suddenly startled, and he remembered something.

"In July, the International Congress of Mathematicians is coming, and Li Muke is one of the speakers of the plenary meeting, so he is ......."

His gaze showed surprise: "That's what he was for?" ”

众人都是一愣，顿时便都不可思议地看向了李牧。

Li Mu, before the International Congress of Mathematicians, plans to attack the Neville-Stokes equation?

Just when they were amazed, Li Mu's hand, which was constantly calculating on the scratch paper, suddenly stopped at this time, and his brows furrowed slightly.

After a moment, he shook his head, then put away the pen and put the cap back on.

When he looked up, he finally noticed the professors who surrounded him.

He was stunned for a moment, then smiled and said, "Professor Wiles, Professor Licht, and Professor David...... I didn't expect you to come to my class. ”

Wiles smiled: "After all, it is the first class in your life as a teacher, and I, as your former teacher, of course have to come and have a look." ”

Li Het next to him immediately rolled his eyes and exposed him: "You obviously came to see it because of the news of queuing up for class, and before you came, you were surprised that Li Mu actually started class today." ”

Everyone burst into laughter.

Wiles waved his hand indifferently and said, "Don't worry about these details. ”

Then, he looked at Li Mu again.

"You're ...... Studying fluid mechanics? Is it the Neville-Stokes equation? That question for the millennium? ”

As Wiles's question came out, the others stopped talking and turned their heads to look at Li Mu, waiting for his answer.

And Li Mu didn't hide it, nodded and said, "Yes." ”

"At the International Congress of Mathematicians?"

Li Mu nodded again: "Yes." ”

At this moment, Wiles and the others couldn't help but gasp.

Boy.

This mathematical conjecture crusher is now about to start tackling another puzzle?

And it's one of the seven math puzzles of the millennium.

也许从知名度上并不如哥德巴赫猜想那样著名，但是，从实际意义上来说，以及对数学界和物理学界的意义来说，这个问题的证明，都十分巨大。

The solution of this problem can not only help researchers related to fluid mechanics in reality to analyze, so as to help human life, but also represent the end of the last problem of classical physics.

"Are you sure?" Wiles asked again.

Li Mu thought for a moment, finally nodded, and said with a smile: "If you asked me before this class, I might have to say that I am not very sure, but after this class, I want to say that I am already very sure." ”

“距离国际数学家大会的开始还剩下4个月，这个时间，足够了。”

"Four months ......," Wiles said, "I remember that the original report of the International Congress of Mathematicians should be sent at least three months in advance, right?" So, strictly speaking, you only have a month left. ”

Li Mu raised his eyebrows and said with a smile: "Although the plenary report will be an hour, this time is not enough for me to speak. ”

"So I'll probably talk about it separately."

"And the specific situation, we have to see whether the IMU at the time is willing to give this face."

Li Mu smiled slightly.

His words made several people present a little puzzled.

See if the IMU gives face?

IMU is the International Mathematical Union, but why look at this kind of thing now?

However, Wiles remembered something, and then, he smiled and stretched out his hand, patted Li Mu's shoulder, and said, "I think, they will definitely give you this face." ”

"Okay, then, you should be very busy, so we won't bother you anymore, and look forward to your performance at the International Congress of Mathematicians then."

(End of chapter)