universal data

Chapter 399
402 chapter

At the end of the academic report, Professor Bill on the podium took a few slips of paper with questions from the front row and answered them one by one.

Cheng Nuo stood in the corner. Although he understood some problems, he still listened very carefully.

"It's not my turn to ask the question yet!" After listening for a while, Cheng Nuo muttered in a low voice when he saw that it wasn't his question yet.

A mathematician sitting in the last row, very close to Cheng Nuo, seemed to have heard Cheng Nuo talking to himself, shook his head and smiled, and waved to Cheng Nuo, "Waiter, come here!"

At the first call, although Cheng Nuo heard someone calling the waiter, he had not yet stepped into the role and did not realize it was him.

"Waiter, come here!"

When the mathematician called for the second time, Cheng Nuo was stunned for a moment, and walked up to the mathematician with a waiter-like smile on his face, "Sir, are you calling me?"

The mathematician nodded, examined it and asked, "Are you a waiter in this hotel?"

"Yes, sir, I have only been working in the hotel for a few days, so if there is anything inappropriate, please ask Haihan." Cheng Nuo guessed that the mathematician must have seen himself sitting on the seat listening to the lecture. So say so.

"I see you were listening carefully to Mr. Bill's academic report just now?" The mathematician asked with a smile, "How much did you understand?"

Cheng Nuo waved his hand, "Sir, you are joking. I just admire a Philippine award winner like Mr. Bill. I just listen to it and join in the fun. How can I understand much?"

"I just understand more than 90% of it." Cheng Nuo added in his heart.

The mathematician had such an expression, and smiled, "Although I don't understand, it's good to feel the atmosphere."

Apparently, he subconsciously interpreted Cheng Nuo's "didn't understand much" as "didn't understand at all".

He waved his hand to Cheng Nuo, "Please get me a drink."

Although he was reluctant because he didn't know when Professor Bill on the stage would answer his question, in order to avoid being exposed, he still smiled and nodded, "Okay, sir, wait a moment, right away."

After saying this, Cheng Nuo walked out of the back door of the auditorium in a hurry.

…………

In the auditorium, Professor Bill, who was standing on the stage, had just finished answering the previous question, took a sip of water, and picked up the next note.

Professor Bill glanced at it and said with a smile, "This question is interesting."

Then, he picked up the microphone and explained to everyone in the audience, "I found an interesting question, everyone can listen to it."

"The question is: what is the k-value function of the affine DL variety in the case that the analytic map of Lie groups fluctuates irregularly at the zero point?"

"Being able to ask this question shows that I have almost fully understood what I just said. Why did I say this topic is interesting? In fact, people who notice it will find that I mentioned this question briefly when I talked about it just now."

"We have been doing this research, but there is no conclusion so far, so I can only give you an answer that I understand."

At this moment, Cheng Nuo also came in through the back door with a drink in hand. Seeing that his question had been mentioned, he immediately stopped and listened.

Professor Bill went on to say, "As we all know, Lie groups are real manifolds or complex manifolds with a group structure, and the addition operation and inverse operation in the group are analytic maps in the shape. If we let a k be an algebraically closed field , and let A^n be an n-dimensional affine space on k."

"From this, it can be easily concluded that f∈k[X1, X2, X3...Xn], Z(S)={x∈A^n|f(x)=0 for all f∈S}."

"If there exists S such that V∈A^n satisfies V=Z(S), a non-empty algebraic set V is regarded as irreducible, let I(V) be the ideal of all functions that take zero values ​​on V, I(V)={f∈k[x1, x2, x3,...xn]|f(x)=0 For any affine algebraic set V, its coordinate ring is the quotient of the polynomial to the above ideal."

"Then, here comes the problem..."

On this subject, Professor Beer seemed enthusiastic.The previous questions were answered in one or two minutes, but this question has been explained for more than five minutes before it has the momentum to stop.

"This is what I understand about this issue. Of course, what I said may not be correct. If you have different opinions, we can discuss it privately."

"Finally, I would like to take the liberty to ask, I don't know which one of you here raised this question, can you let me know?" Professor Bill held up the note, and looked at the audience inquiringly.

One second, two seconds, three seconds...

The atmosphere fell into a strange silence. After more than ten seconds, no one in the audience raised their hands.

The mathematician sitting in the last row looked at the half-slip that Professor Bill held up, and felt familiar for some reason.

Professor Bill also looked a little embarrassed, and said with a smile, "Since this colleague is unwilling to show up, let's talk in private, talk in private..."

After saying that, he picked up the next piece of paper and answered the question.

In the audience, the hundreds of mathematicians who came to listen to the lecture were also talking about it.

"What's the matter with that person, he gave up such a good opportunity to meet Professor Bill, what do you think?!" The mathematician in the last row muttered without deliberately lowering his voice.

Cheng Nuo smiled wryly.He didn't expect that Professor Bill would pay so much attention to just asking a question.

He also wanted to touch the boss in the front row, but the reality didn't allow it, so he had to give up.

Just keep this as a secret.

"Sir, the drink you want." Cheng Nuo said to the mathematician who was still muttering.

The mathematician took the drink from Cheng Nuo and said dissatisfiedly, "It's been so long."

Cheng Nuo said apologetically, "When I first came in, I heard Professor Bill talking about an interesting question, so I stopped and listened for a while."

"Interesting?" The mathematician snorted, "For you laymen, I'm afraid it's just interesting. The meaning of this question is not that simple."

Cheng Nuo stood aside with his hands down and said nothing.

The mathematician waved his hand, "Okay. Go down and do your work."

"Then sir, I'll go to work first, and if you need anything else, please speak up." The mathematician didn't say anything, and Cheng Nuo was about to leave.

The one-hour academic report was about to end, and he had heard everything he wanted to hear and asked, and he had learned a lot. He needed to find a place to digest it before rushing to the next lecture.

Just as Cheng Nuo was about to take a step, he heard the mathematician's voice behind him again, "Your shoelaces are untied."

Cheng Nuo looked down, "Oh, thank you."

Cheng Nuo knelt down to tie his shoelaces and left the auditorium quickly without noticing that half a piece of paper fell out of his pocket.

The mathematician saw this scene and just wanted to remind Cheng Nuo, but his eyes widened unconsciously as if he had thought of something.

If he remembered correctly, the half piece of paper dropped by the waiter exactly matched the pattern of the torn part of the piece of paper that Professor Bill showed them on the stage.

It should be... the same piece of paper.

Then, don't you mean...

(End of this chapter)