Chapter 377

Chapter 380

it was Cheng Nuo who carefully listened to the lecture.

So countless eyes, together to see the direction of Cheng Nuo.

And sitting beside Cheng Nuo, Tan Weiwei, was naturally noticed by the public.

For Cheng Nuo, of course, they are strange. But Tan is slightly different.

Most of the students who attended the lecture today were students from MIT and Harvard University. As a third year math student, Tan Wei did not look up and look down. Naturally, many people knew her.

Sitting next to the man who raised his hand, and both of them were Chinese faces, the two probably came together in company.

It's just that they have no impression of the man, the man who looks so much younger than them.

At this point, the people who are disturbed by Cheng Nuo's sudden raising of hand are not so anxious to leave. They hold their arms one by one and stare at Cheng Nuo to see what he can say.

On the stage, the mountain is not really a Leng.

I thought it was just a routine question, but I didn't expect someone to raise his hand.

Shanxia Zhenwei's face appeared a kind smile, reaching for Cheng Nuo's direction, "this classmate, come on, tell me your confusion!"

At the same time, Yamashita really did not put on a pair of master's appearance, looking at the stage calmly. There's a look like you're trying to make me difficult.

At the beginning, when he was 19 years old, he became a disciple of Ueda Shinichi and followed his teacher for more than ten years. Only then did he thoroughly understand his cosmic Teichmuller theory.

But this is only 12 / 10, which can make him a leader in China.

We can see how corrupt the set of mathematical tools created by Shinichi Ueda.

Yamashita does not dare to say that in today's world, in addition to his teacher, Shinichi Morita, in the understanding of the cosmopolitan Teichmuller theory, the number of fingers surpassing him is not more than five fingers.

Therefore, he is not afraid of any difficulties from Cheng Nuo.

"Cheng Nuo, are you serious?" Seeing countless eyes converging on two people, Tan Wei can't help but pull Cheng Nuo's clothes and ask in a low voice.

Cheng Nuo laughs and whispers, "of course it's serious. I do have a little doubt and hope to get an answer. "

With that, Cheng Nuo took the microphone from the front row, cleared his throat, and said, "I do have a question. I hope Mr. Yamashita will give me some advice."

"I remember Mr. Yamashita said just now that a considerable amount of space in the elaboration of the cosmic Teichmuller theory is about how to deal with the inertial group and the problem of profen Dean torsion in the far Abelian geometry formed by hyperbolic combination."

"Yes, good." Yamashita nodded with disapproval.

Cheng Nuo chuckled. "My problem is, if Σ? Primes is a complex number of empty subsets, then PSC type semigraphs can be considered as a slightly modified Galis classification formula for" infinite group graphs ". It should be associated with a curve that takes into account point stability. So I'd like to ask, if you're sure about this curve? "

After finishing the question, Cheng Nuo raised his eyes, and his eyes fell on the serious Yamashita Zhenwei on the stage.

This student's problem is very difficult!

Based on the question Cheng Nuo asked, Yamashita decided that the student understood at least 90% of what he had just said.

I don't know if he's from MIT or Harvard!

Cheng Nuo's problem is very difficult, but it is not partial to the point.

"Let me think about it." Yamashita did not frown and ponder, and then took out the manuscript paper and pen directly from the briefcase.

The group of students below, seeing that Yamashita had not done so, looked at each other again and were all surprised.

It's difficult!

A nameless student, even when he opened his mouth, puzzled the student of Shinichi Ueda!

You know, that's a mathematician who has been immersed in the theory of Teichmuller for more than ten years!

The atmosphere in the small auditorium became quiet.

One of the students did not worry about leaving, but looked at the stage one by one, hoping that the mountain could not give the answer as soon as possible.

But 15 minutes later, Yamashita did not finish writing and drawing on the paper, and turned to write down a series of formulas on the blackboard behind him.

【(U，x)→H^2(U，U{x}；Z)

Aut^|grph|（g)∈Aut(g)

Dehn(g)={α∈Aut|grph|（g)|αg|v=idg|v

?（＾?＾●）??（●′?｀）?

……………… 】

a dozen lines of formula were written by Yamashita in a single breath.

He wiped the sweat on his forehead with his cuff, looked at Cheng Nuo's calm eyes, and asked, "do you understand?"Cheng Nuo stared at the blackboard, silent for a few seconds, then nodded, "understand."

Indeed, he is indeed a disciple of Shinichi Ueda. As soon as he finished reading the formula, Cheng Nuo felt suddenly enlightened.

It's really not a breath at the foot of the mountain.

At last I got through. He was really worried that he couldn't answer Cheng Nuo's question, which would be a disgrace.

"Well, this student, when you're finished, you can sit down." Yamashita did not use his hand to indicate to Cheng Nuo, "if there are any other students who have questions, if not, our academic lecture will end. The next lecture will be held in New York, and the time will be next Friday. You can publicize it."

"Wait a minute!" At the foot of the mountain, I didn't have a word to say, but I heard such a cry from below.

Following the direction of the voice, it is Cheng Nuo's familiar face.

Yamashita really did not smile, "classmate, your question is not finished, what else?"

Cheng Nuo mouth with a smile, "Mr. Yamashita, who said, my question finished?"

"Just now, it's just the first question I want to ask. The students have another question. I wonder if Mr. Yamashita can answer it again?"

Yamashita really did not smoke, had to harden the scalp way, "willing to."

"In fact, the second question is related to the first one. Before, Mr. Yamashita has solved the equation of this stable curve, so the student would like to ask, since the equation is determined, there will inevitably be a proite group, plus an isomorphic curve. So how to express, on a more conceptual level, the form of finite hyperbolic topological surfaces of PSC type semigraphs Cheng Nuo does not speak in a hurry or slow tone.

There is no frown at the foot of the mountain.

Where did this student come from and why did he always ask such tricky questions.

"Let me meditate again."

No way, take out the big baby draft paper, calculate!

Ten minutes, twenty minutes, thirty minutes

As half an hour passed by in a hurry, the group of students who were talking in a low voice gradually raised the volume and became extremely noisy.

Cheng Nuo is just like sitting on Mount Tai, sitting in his seat and chatting with tan in a small voice.

Finally, there was no action at the foot of the mountain on the stage.

He brushed more than ten pages of draft paper off the speech table and said, "I can't answer it!"

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