Chapter 402: Half a piece of paper

Chapter 402
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 seriously.
"It's not my turn yet!" After listening for a while, Cheng Nuo whispered when he saw that it hadn't come to his question.
A mathematician sitting in the last row close to Cheng Nuo seemed to hear Cheng Nuo's self-talk, shook his head and smiled, and waved to Cheng Nuo, "Waiter, come here!"
First, even though Cheng Nuo heard someone call the waiter, he has not yet taken on the role, and he did not react.
"Waiter, come here!"
Until the mathematician called for the second time, Cheng Nuo was stunned for a moment, with a waiter-like smile on his face and walked to the mathematician, "Sir, you call me?"
The mathematician nodded, examined it and asked, "Are you the waiter of this hotel?"
"Yes, sir, I have just entered the hotel for a few days to work, so if there is anything inappropriate, please ask Haihan." Cheng Nuo estimated that the mathematician should have seen himself sitting in his seat listening to the lecture. So say so.
"I think 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, "Mr. joked. I just admire a Philippine award winner like Mr. Bill. After listening to it, I can join in the fun. How can I understand."
"I only understood more than 90% of it." Cheng Nuo added in his heart.
The mathematician had such an expression as expected, and said with a smile, "Although I don't understand, it's good to feel the atmosphere."
Obviously, he subconsciously understood the "didn't understand much" in Cheng Nuo's words as "not understood at all".
He waved to Cheng Nuo, "Take me a drink, please."
Although I was reluctant, because I didn't know when Professor Bill on the stage would answer his question, but in order to avoid exposure, he smiled and nodded, "Okay, sir, wait a minute, right away."
After saying this, Cheng Nuoma walked out the back door of the auditorium in a hurry.
…………
In the auditorium, Professor Bill, who was standing on the stage, had just answered the last question, took a brief sip of water, and picked up the next note.
Professor Bill glanced around, then laughed, "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: when the analytic map of the Lie group fluctuates irregularly at the zero point, what is the k-value function of the affine DL cluster?"
"Being able to ask this question shows that I have almost fully understood what I have just said. Why do I say this topic is interesting? In fact, people who have noticed will find that this question was covered by me when I talked about it just now."
"We have been doing this research, but so far there is no conclusion, so I can only give you an answer that I understand."
At this time, Cheng Nuo also walked in from the back door with a drink. Seeing that his problem had already been mentioned, he immediately stopped and stopped to listen.
Professor Bill went on to say, "As we all know, Lie groups are real manifolds or complex manifolds with group structure, and the addition operations and inverse operations in the group are analytic mappings in the form. If we let k be an algebraic closed domain , And let A^n be an n-dimensional affine space on k."
"From this, it can be easily obtained that f∈k[X1, X2, X3...Xn], Z(S)={x∈A^nf(x)=0 for all f∈S}."
"If there is S such that V∈A^n satisfies V=Z(S), a non-empty algebra set V is regarded as irreducible. Let I(V) be an ideal formed by all functions taking zero values ​​on V, I(V)={f∈k[x1,x2,x3,……xn]f(x)=0 For any set of affine algebras V, the coordinate ring is the quotient of the polynomial to the above ideal."
"Then, here comes the problem..."
On this issue, Professor Bill seems very enthusiastic. The previous questions answered were only one or two minutes away, and it took more than five minutes to explain this question before it stopped.
"On this issue, what I understand is these things. Of course, what I said may not be correct. If there are different opinions, we can discuss it in private."
"Finally, I want to take the liberty to ask, I don't know who raised this question, can you let me know about it?" Professor Bill held up the piece of paper aloft, and looked at the stage with searching eyes.
One second, two seconds, three seconds...
The atmosphere fell into a weird silence, more than ten seconds later, no one in the audience raised their hands.
The mathematician sitting in the last row looked at the half piece of paper that Professor Bill had held up. For some reason, he had a familiar feeling.
Professor Bill's expression was also a bit awkward, and he chuckled, "Since this colleague doesn't want to show up, let's talk in private and talk in private..."
After speaking, he picked up the next note to answer 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, such a good opportunity to get in touch with Professor Bill, but he just gave up like that? What do you think?!" The mathematician in the last row muttered without deliberately lowering his voice.
Cheng Nuo smiled bitterly. He didn't expect that he was just asking a question, and Professor Bill would actually take it so seriously.
He also wants to touch the boss in the front row, but reality does not allow it, so he can only give up.
Just treat this as a secret.
"Sir, the drink you want." Cheng Nuo said to the mathematician who was still whispering.
The mathematician received the drink that Promise had handed over, and said dissatisfiedly, "So long."
Cheng Nuo said apologetically,
When I first came in, I heard Professor Bill talking about a very interesting question, so I stopped and listened for a while.

"Interesting?" The mathematician snorted, "For you laymen, I am afraid it is just interesting. The meaning of this question is not that simple."
Cheng Nuo stood aside with his hands down, without speaking.
The mathematician waved his hand, "Okay. You go down and do your job."
"Mr.~EbookFREE.me~ I'll go to work first, and then you can talk if you have any needs." The mathematician did not say, Cheng Nuo was also ready to leave.
The one-hour academic report is about to end soon. He has heard everything he wants to hear and ask. He has learned a lot. He needs to find a place to digest it before rushing to the next lecture.
As soon as Cheng Nuo was about to take a step, he heard the mathematician's voice again behind him, "Your shoelaces are opened."
Cheng Nuo looked down, "Oh, thank you."
Cheng Nuo knelt down to tie his shoelaces and walked out of the auditorium quickly, without noticing that half of the paper fell out of his pocket.
The mathematician saw this scene and just wanted to remind Cheng Nuo, but he seemed to have thought of something, and his eyes widened unconsciously.
If he remembered correctly, the half of the paper that the waiter dropped was exactly the same as the pattern of the torn part of the paper that Professor Bill showed them on the stage.
It should be... the same paper.
Then, doesn't it mean...